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1
Heikkinen, Jouko. "TELEMETRY AND RADIO FREQUENCY IDENTIFICATION." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/607334.
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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, NevadaComparison of short-range telemetry and radio frequency identification (RFID) systems reveals that they are based on very similar operating principles. Combining the identification and measurement functions into one transponder sensor offers added value for both RFID and telemetry systems. The presence of a memory (e.g. FRAM) in the transponder, required for ID information, can also be utilized for storing measurement results. For passive transponders low power consumption is one of the main objectives. Wireless power transfer for passive transponder sensors together with above aspects concerning a combined telemetry and identification system are discussed.
2
Crawford, Ted, Roger Bracht, Richard Johnson, and Barry Mclaughlin. "High Explosive Radio Telemetry System." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607361.
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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, CaliforniaThis paper overviews the High Explosive Radio Telemetry (HERT) system, under co-development by Los Alamos National Laboratories and AlliedSignal Federal Manufacturing & Technologies. This telemetry system is designed to measure the initial performance of an explosive package under flight environment conditions, transmitting data from up to 64 sensors. It features high speed, accurate time resolution (10 ns) and has the ability to complete transmission of data before the system is destroyed by the explosion. In order to affect the resources and performance of a flight delivery vehicle as little as possible, the system is designed such that physical size, power requirements, and antenna demands are as small as possible.
3
Becker, Brandon, and Charles Bennett. "Software Defined Radio MIMO Telemetry Transmitter." International Foundation for Telemetering, 2016. http://hdl.handle.net/10150/624241.
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This paper describes the development of a small, low-cost, and flexible telemetry transmitter that
can be used for multiple-input multiple-output (MIMO) communication systems. In the intended
application, the transmitter will collect data from sensors on small quad copters or drones,
regarding the vehicle’s attitude, location, movement, and other flight data. This will be combined
into a single data stream, and base-band modulation applied by a field programmable gate array
(FPGA). The FPGA output will control a separate RF modulation board, which will generate a
pair of RF signals suitable for use in a 2x2 MIMO system. The original application uses the 902-
928MHz ISM band. The modulation format can be altered by changing the software for the
FPGA.
4
Bracht, Roger, Jeff Dimsdle, Dave Rich, and Frank Smith. "RADIO FREQUENCY OVERVIEW OF THE HIGH EXPLOSIVE RADIO TELEMETRY PROJECT." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607352.
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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, CaliforniaHigh explosive radio telemetry (HERT) is a project that is being developed jointly by Los Alamos National Laboratory and AlliedSignal FM&T. The ultimate goal is to develop a small, modular telemetry system capable of high-speed detection of explosive events, with an accuracy on the order of 10 nanoseconds. The reliable telemetry of this data, from a high-speed missile trajectory, is a very challenging opportunity. All captured data must be transmitted in less than 20 microseconds of time duration. This requires a high bits/Hertz microwave telemetry modulation code to insure transmission of the data within the limited time interval available.
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Xianming, Zhao, Zhou Tingxian, Zhao Honglin, and Lu Qun. "CONVOLUTIONAL CODING FOR HR RADIO TELEMETRY SYSTEM." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608418.
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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, NevadaThis paper discusses an error-correcting scheme applied to a telemetry system over HF radio channel. According to the statistical properties of transmission error on HF radio channel, the scheme uses one important diffuse convolutional code, which is threshold decoded and corrects the random or burst errors. The operation of this code is explained, and a new method for word synchronization and bit synchronization is proposed. Coding and decoding, word synchronization, and bit synchronization are all activated by software program so as to greatly improve the flexibleness and applicability of the data transmission system. Test results of error-correcting are given for a variety of bit-error-rate (BER)s on HF radio channel.
6
Janes, Clinton C. "The Impact of Telemetry on Radio Astronomy." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608408.
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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, NevadaThe National Radio Astronomy Observatory (NRAO) operates the Very Large Array (VLA) Radio Observatory in New Mexico, and the Very Long Baseline Array (VLBA) with 10 radio antenna in locations from Hawaii to St. Croix, as well as other radio telescopes at Green Bank, West Virginia, and the 12 meter radio antenna near Tucson, AZ. Although radio frequency (RF) bands have been set aside for passive use by these radio telescopes, harmful interference from increased demands on the radio spectrum is a growing problem for earth-based radio astronomy. For example, locating a radio observatory in a remote area is little defense from satellite downlink telemetry. This paper describes why the operation of the radio telescopes is susceptible to RF telemetry interference, what bands are particularly vulnerable and at what power levels, and how data collection and centralized control of the arrays are accomplished without RF telemetry.
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Mwangi, Patricia A. W., Amr Haj-Omar, and Kishan Montaque. "SIMULATION OF THE AERONAUTICAL RADIO CHANNEL FOR TELEMETRY APPLICATIONS." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604033.
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ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, CaliforniaThe aeronautical channel is an air to ground channel characterized by multipath, high doppler shifts, Rayleigh fading and noise. Use of a channel sounder ensures proper estimation of the parameters associated with the impulse response of the channel. These estimates help us to characterize the radio channels associated with aeronautical telemetry. In order to have a satisfactory channel characterization, the amplitudes, phase shifts and delays associated with each multipath component in the channel model must be determined.
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Newcomb, Gregory, and Ratish J. Punnoose. "Using the GNU Radio Platform to Implement a Telemetry Receiver." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606211.
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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, CaliforniaGNU Radio is a flexible software radio platform that enables custom radio development. It consists of open-source signal processing blocks that can be integrated into custom applications. The Universal Software Radio Peripheral (USRP) is a hardware board that works well with the GNU Radio suite. The schematics and firmware on this board are also open-source. As such, this GNU Radio and the USRP hardware form a rapid prototype platform for software radio based telemetry receivers.
9
Palmer, George Caleb. "Genetic Characterization of Intermixed Walleye Stocks in Claytor Lake and the Upper New River, Virginia." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/36144.
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Historically, the New River may have contained a genetically unique, river-spawning population of walleye (Stizostedion vitreum). Additionally, a number of genetically different walleye stocks have been stocked in Claytor Lake, Virginia. The increasing importance of the walleye fishery led to interest in clarifying key unknowns regarding the biology of the New River walleye stock. A radio telemetry study and genetic evaluation of present-day stocks led to identification of three spawning areas and the characterization of the genetic stock structure of walleye in Claytor Lake and the upper New River.
Using radio telemetry to track movements of walleye, I determined that two resident walleye populations co-exist: one within Claytor Lake and the other in the New River above the lake. These populations establish spatially disjunct home ranges, remaining spatially separated throughout most of the year. Although there is no blockage to movement or migration, walleye within Claytor Lake generally spawn at Allisonia, while walleye within the upper New River spawn at Buck Dam. Some walleye from both populations spawn in other areas, such as Fosters Falls.
Using allozymes, microsatellite DNA, and mitochondrial DNA marker techniques to examine population structure of walleye, I determined that the walleye within Claytor Lake are a panmictic population. This is the result of years of stocking walleye from different genetic stocks and interbreeding among individuals. The genetic structure of walleye from the New River also shows the presence of more than one genetic stock. Within the New River population, there exists a genetic stock of walleye that is characterized by three mitochondrial DNA haplotypes (43, 44, and 45) that previously have not been seen. This may be indicative of a unique walleye stock that is native to the New River and which has remained spatially or temporally segregated by spawning habits.
The co-existence of two different walleye populations in the Claytor Lake / upper New River system justifies different management strategies. I recommend that management of the walleye population in Claytor Lake focus on increasing the exploitation of this non-indigenous stock. Management of the upper New River walleye population should focus on conservation of the unique native stock through supportive breeding and/or strict harvest regulations.Master of Science
10
Winstead, Michael L., and Karen J. Saenz. "A NEAR LAUNCH FLIGHT SAFETY SYSTEM UTILIZING TELEMETRY SIGNAL RADIO INTERFEROMETRY." International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/607543.
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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, NevadaFlight Safety concerns increase proportionally with increasing missile performance. These concerns are greatest in the near launch arena where a missile has the greatest potential energy. Systems such as radar, GPS tracking systems, and optics are normally of limited use in this arena for a number of reasons. A system was required that would provide useful tracking data in the first few seconds of a missile launch. This system has met that requirement providing nominal path deviation data from the launcher out to as much as 120 seconds. The tracking system described herein uses the principle of radio interferometry to derive phase difference measurements between carefully spaced antennas. These measurements are transmitted to the Operational Display Facility and converted to a usable angular deviation plot for use by Flight Safety Personnel. This paper provides an elementary radio interferometer system background and discusses this particular system setup and use. Some detail is provided on the premission simulation and setup of the system as well as the real-time display setup and output of the final data product.
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Ziemienski, Bruce V. "Characteristics and Uses of Multipoint Radio in the 950 MHz Telemetry Band." International Foundation for Telemetering, 1988. http://hdl.handle.net/10150/615046.
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International Telemetering Conference Proceedings / October 17-20, 1988 / Riviera Hotel, Las Vegas, NevadaData communications is one of the fastest growing industries today. Many see data communications as one key to increasing workforce productivity. Communications circuits are becoming increasingly expensive especially if wireline is used. A simple solution to this problem is utilized radio. With the advent of the new Multi- Point distribution Service on the 950 MHz Microwave band, simple and relatively inexpensive solutions to data communications distribution has been solved. This paper will explore this new service and its uses as related to data communications.
12
Nicholson, Gareth Andrew. "The design of an optimal, dynamic, multi-hop telemetry network." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019.1/2861.
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Dillon, Adam. "Ocelot Density and Home Range in Belize, Central America: Camera-Trapping and Radio Telemetry." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/36269.
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Historically, ocelots (Leopardus pardalis) were hunted in large numbers for their fur, causing declines in population abundance across their range. In recent decades protection measures (e.g. CITES) and decreased public demand for ocelot fur resulted in declines in hunting pressure. Do to their elusive nature there is little known about ocelot population size, structure or general ecology. This lack of information hampers our ability to provide protection for this endangered species.
Remote cameras were deployed in 7 grids across the landscape to estimate the density of ocelots in 2 habitat types; the broadleaf rainforest and pine forest of western Belize. Camera trapping combined with mark-recapture statistics resulted in densities of 18.91 - 20.75 ocelots per 100 km2 in the rainforest and 2.31 0 3.81 ocelots per 100 km2 in the pine forest habitat. This study examined the issues of camera spacing and animals with zero distance moved and their effect on density estimation. Increased camera spacing resulted in larger buffer sizes (increasing the effective trap area) and decreased density estimates. Inclusion of zero distance animals decreased buffer sizes and increased density estimates. Regardless of these effects, ocelot density was higher in the broadleaf rainforest than the pine forest. The ocelot density estimates in Belizean forests were lower than those in other portions of their range. The camera trapping technique demonstrated ocelots to be mostly active at night, with peaks of activity after sunset and before sunrise, and to travel low-use roads in the wet season and high-use roads in the dry season.
Radio telemetry was used in this study to estimate the home range size and density of ocelots in the broadleaf rainforest of western Belize. Six collared ocelots (3 male, 3 female) were collared and tracked from September 2003 - August 2004. Male ocelots had an average home range size of 33.01 km2 (95% fixed kernel) and 29.00 km2 (100% MCP), and female ocelots had an average home range size of 21.05 km2 (95% fixed kernel) and 29.58 km2 (100% MCP). Most ocelots had larger home ranges in the dry season than the wet season. Ocelots showed a large amount of same sex home range overlap; with male-male overlap averaging 25% (100% MCP) and female-female overlap averaging 16% (100% MCP). Ocelot density determined using radio telemetry was 7.79 - 10.91 ocelots per 100 km2. The radio telemetry ocelot densities were lower and their home ranges larger in the Belizean broadleaf rainforests than those in other portions of their range.
The camera trapping and radio telemetry techniques were compared against one another and combined in order to test which technique may be more successful in studying certain aspects of feline behavior. Activity budgets and density estimates determined from camera trapping were superior to radio telemetry, whereas camera trapping home ranges showed higher variation and lower resolution than radio telemetry. However, home range estimates determined from camera trapping captured long distance movements, a larger percent of territory overlap, and displayed potential for estimating an animal's core use area. When radio telemetry data were used to create a buffer around camera traps based on the average radius of an ocelots' home range size, the resulting density estimates were smaller than those determined using the current camera trapping methodology.
This study provided much needed baseline information on ocelot abundance, home range size, activity patterns, and trail use. While sample sizes were small, this study had the largest number of ocelots captured in Central America to date. Although camera trapping is already a useful tool in felid research, this study highlights the importance of further standardization of the camera trapping methodology, increasing its potential for monitoring and conservation across habitats and study sites.Master of Science
14
Penne, Christopher Rhoades. "Radio telemetry study of common carp in Clear Lake, Iowa, to guide future management." [Ames, Iowa : Iowa State University], 2007.
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Gallagher, Michael James. "Development of telemetry for the agility flight test of a radio controlled fighter model." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23639.
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Approved for public release; distribution is unlimitedAdvanced design tools, control devices, and supermaneuverability concepts provide innovative solutions to traditional aircraft design trade-offs. Emerging technologies enable improved agility throughout the performance envelope. Unmanned Air Vehicles provide an excellent platform for dynamic measurements and agility research. A 1/8-scaled F-16A ducted-fan radio-controlled aircraft was instrumented with a telemetry system to acquire angle of attack, sideslip angle, control surface deflection, throttle position, and airspeed data. A portable ground station was built to record and visually present real-time telemetry data. Flight tests will be conducted to acquire baseline high angle-of-attack performance measurements, and follow-on research will evaluate agility improvements with varied control configurations.
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Freudinger, Lawrence C., Filiberto Macias, and Harold Cornelius. "Frequency Agile Transceiver for Advanced Vehicle Data Links." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/605968.
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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, NevadaEmerging and next-generation test instrumentation increasingly relies on network communication to manage complex and dynamic test scenarios, particularly for uninhabited autonomous systems. Adapting wireless communication infrastructure to accommodate challenging testing needs can benefit from reconfigurable radio technology. Frequency agility is one characteristic of reconfigurable radios that to date has seen only limited progress toward programmability. This paper overviews an ongoing project to validate a promising chipset that performs conversion of RF signals directly into digital data for the wireless receiver and, for the transmitter, converts digital data into RF signals. The Software Configurable Multichannel Transceiver (SCMT) enables four transmitters and four receivers in a single unit, programmable for any frequency band between 1 MHz and 6 GHz.
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Britto, Elizabeth, and Patricia Mwangi. "CHANNEL ISSUES FOR DESIGN OF THE iNET RADIO LINK PROTOCOL." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/604896.
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ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, NevadaThis paper presents the issues related to the modeling and performance of the Radio Channel used in Telemetry. Because of the physical environment one expects stressed channel conditions due to multipath, shadowing, and high doppler shift caused by high speeds of up to mach 3. Prior work has created useful data and models for analysis of these radio channels. This paper will develop features of a channel simulator that will allow for evaluation of radio protocols for iNET. Substantial work has also been done to develop requirements for the iNET networked radio environment. This paper will map these requirements into technical features required for the radio link and consider how these will relate to the effects of the channels.
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Geoghegan, Mark. "Challenges of Implementing an iNET Transceiver for the Radio Access Network Standard (RANS)." International Foundation for Telemetering, 2011. http://hdl.handle.net/10150/595621.
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Peng, Song, Zhang XiaoLin, and Zhang Wei. "THE RESEARCH ON THE HSP50214 PDC CHIP APPLYING TO FDM TELEMETRY SYSTEM." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/604933.
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International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, CaliforniaThe content of this paper is putting forward an idea that applies the software radio technique to the subcarrier demodulation of frequency divided multiplexing telemetry system. Firstly, the article explains the basic thought and application of the software radio. It introduces the main function and the use of the programmable downconverter in HSP50214/ HSP50216. Secondly, it discusses the merit and shortcoming about the method of the subcarrier demodulation of frequency divided multiplexing telemetry system in common use. Finally, the article aims at ± 7.5% proportion bandwidth FM subcarrier channels that in common use in the military standard, introducing HSP50214/HSP50216 programmable downconverter in achievement of design and simulation result. The main problems in the design are discussed and a conclusion obtained.
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Starkey, Ryan P., Mark J. Lewis, and Charles H. Jones. "PLASMA TELEMETRY IN HYPERSONIC FLIGHT." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/607506.
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International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, CaliforniaProblems associated with telemetry blackout caused by the plasma sheath surrounding a hypersonic vehicle are addressed. In particular, the critical nature of overcoming this limitation for test and evaluation purposes is detailed. Since the telemetry blackout causes great concern for atmospheric cruise vehicles, ballistic missiles, and reentry vehicles, there have been many proposed approaches to solving the problem. This paper overviews aerodynamic design methodologies, for which the required technologies are only now being realized, which may allow for uninterrupted transmission through a plasma sheath. The severity of the signal attenuation is dependent on vehicle configuration, trajectory, flightpath, and mission.
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Ardrey, David, Gregory Gimler, and Mark Pippitt. "A Software Defined Radio Based Architecture for the Reagan Test Site Telemetry Modernization (RTM) Program." International Foundation for Telemetering, 2015. http://hdl.handle.net/10150/596436.
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ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NVMIT Lincoln Laboratory has developed a Software Defined Radio based architecture for the Reagan Test Site Telemetry Modernization (RTM) program, which will enhance the current operations of the ground based telemetry systems and enable new modes of operation. There are three main objectives of the RTM program; increasing overall system performance, improving reliability and maintainability, and enabling future customer needs. RTM provides a fully integrated system that can be configured and remotely controlled from a single location. This centralized command and control provides a way to automate certain functions and frees up operator resources, especially for more complex mission scenarios. Software modules, running on general-purpose computers perform signal and data processing that have been traditionally performed in special purpose hardware based components. This provides the flexibility to scale and adapt to future needs, such as spectrum change, increased need for capacity, and changes to modulation, encoding, and compression. Index Terms - Software Defined Radio (SDR), Open systems architecture, telemetry receiver architecture, Aeronautical Mobile Telemetry (AMT)
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Hinterseer, Martin, and Christoph Wegscheider. "ACQUISITION AND TRANSMISSION OF SEISMIC DATA OVER PACKET RADIO." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/605056.
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ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, NevadaResearch on earthquakes and volcanos is of particular importance in seismic instable regions. To improve opportunities of research and civil defence, continuous coverage of seismic activities of a large area at a certain time is necessary. This paper deals with the issues concerning the collecting of environmental data by a number of autonomous field stations and their transmission to central station through a cost effective low bandwidth packer radio data network. This paper deals with the acquisition, preprocessing and transmission of seismic data. Therefore, a prototype system is discussed, which will be developed at the University of Salzburg, Austria.
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Eatchel, A. L., R. Fevig, C. Cooper, J. Gruenenfelder, and J. Wallace. "DEVELOPMENT OF A BASELINE TELEMETRY SYSTEM FOR THE CUBESAT PROGRAM AT THE UNIVERSITY OF ARIZONA." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/607488.
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International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, CaliforniaA telemetry system has been developed at the University of Arizona to serve as a baseline for future CubeSat designs. Two satellites are scheduled for launch in November of 2002. One features a beacon that operates autonomously of all but the power system and can independently deploy the antennas. The other will test the performance of new semiconductor devices in low earth orbit. Sensors will monitor voltages, currents (from which attitude and tumble rate can be derived), received signal strength and a distribution of temperatures. The CubeSat’s architecture, operating system, sensors, telemetry format and link budget are discussed.
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Parker, Peter, John Nelson, and Mark Pippitt. "An Open Systems Architecture for Telemetry Receivers." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581819.
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An open systems architecture (OSA) is one in which all of the interfaces are fully defined, available to the public, and maintained according to a group consensus. One approach to achieve this is to use modular hardware and software and to buy commercial, off-the-shelf and commodity hardware. Benefits of an OSA include providing easy access to the latest technological advances in both hardware and software, enabling net-centric operations, and allowing a flexible design that can easily change as the needs of customers may change. This paper will provide details of an OSA system designed for a telemetry receiver and list the benefits of OSA for the telemetry community.
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Rigby, P. Robin. "Does tagging for radio acoustic positioning telemetry change spawning behaviour of Chokka squid, Loligo vulgaris reynaudii?" Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0018/MQ57259.pdf.
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Peng, Song, Zhang XiaoLin, Cao Xue, and Qi Xia. "THE APPLICATION OF DIGITAL DEMODULATION TECHNIQUE FOR FREQUENCY MODULATION SIGNAL IN TELEMETRY RECEIVER." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/604956.
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International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, CaliforniaCombined with an example of digital telemetry receiver design, this paper mainly discusses the application of software radio in telemetry receiver. The paper begins with an introduction of applying high efficiency digital filter and math analysis in quadrature digital frequency modulation and demodulation to digital frequency conversion technique. Next, Simulink/Matlab is used to simulate digital telemetry receiver. The method of simulation, analysis and calculation of performance and result of simulation are all available. In the end, the paper discusses digital telemetry receiver design and implement by making use of software radio technique, the circuits apply HSP50214 chip of Intersil Co., CPLD implements of Altera Co. and PC Bus. The sample is an expansion card for personal computer. Result of test, performance of the receiver and conclusion are given out, which show fine performance of receiver and can be apply to practice. The lever of this technology has reached first class in the world.
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Richen, Andrew, David Clark, Stuart McNamee, Robert Ellington, Gary Johnson, Guy Williams, and Robert Selbrede. "IMPROVING INTEROPERABILITY OF GPS AND LBAND TELEMETRY WITH SHAPED-PATTERN ANTENNAS." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605380.
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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, NevadaIn a study sponsored by the Air Force Flight Test Center at Edwards AFB, California, Toyon Research Corporation, Goleta, California, demonstrated that shaped pattern antennas could be used to mitigate interference caused by telemetry signals on GPS systems. Using a technique for fixed reception pattern antenna (FRPA) design, Toyon built and tested a GPS antenna that minimizes reception of telemetry signals from a known location.
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Weberg, Matthew Aaron. "Analysis of Grass Carp Dynamics to Optimize Hydrilla Control in an Appalachian Reservoir." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/52022.
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The primary objectives of this study were: 1) to evaluate the movement patterns, habitat use, and survival of triploid grass carp Ctenopharyngodon idella stocked to control hydrilla Hydrilla verticillata in a riverine reservoir (Claytor Lake, Virginia), 2) to examine grass carp population dynamics and hydrilla growth dynamics in Claytor Lake to guide long-term management efforts, and 3) to describe the aquatic plant community in the New River upstream of Claytor Lake to assess the potential for alterations due to potential grass carp herbivory. Only 3% of radio-tagged grass migrated out of Claytor Lake during the 2-year study. Grass carp movement patterns were significantly correlated with temperature-, weather-, and habitat-related variables. Grass carp selected specific cove, shoal and tributary habitats colonized by hydrilla. First-year survival of grass carp was 44% in 2011, and 25% in 2012. Grass carp growth rates were rapid in 2011, but declined in 2012 concurrent with significant reductions in hydrilla abundance. Based on grass carp population dynamics observed in Claytor Lake, our stocking model predicted that hydrilla could be controlled through 2030 by a grass carp standing stock of 5-6 metric tons. We documented 12 plant species in the New River upstream of Claytor Lake, 9 of which are preferred plants for grass carp suggesting that the plant community could be altered if migration rates increase. Grass carp can be effective for managing hydrilla in riverine reservoirs; however, continued monitoring of grass carp population dynamics, migration rates, and vegetation abundance could facilitate greater precision in management efforts.Master of Science
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Starkey, Ryan P., Mark J. Lewis, and Charles H. Jones. "PLASMA SHEATH CHARACTERIZATION FOR TELEMETRY IN HYPERSONIC FLIGHT." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/606733.
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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, NevadaDuring certain hypersonic flight regimes, shock heating of air creates a plasma sheath resulting in telemetry attenuation or blackout. The severity of the signal attenuation is dependent on vehicle configuration, flight trajectory, and transmission frequency. This phenomenon is investigated with a focus placed on the nonequilibrium plasma sheath properties (electron concentration, plasma frequency, collision frequency, and temperature) for a range of flight conditions and vehicle design considerations. Trajectory and transmission frequency requirements for air-breathing hypersonic vehicle design are then addressed, with comparisons made to both shuttle orbiter and RAM-C II reentry flights.
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Horler, Greg. "The design and use of a digital radio telemetry system for measuring internal combustion engine piston parameters." Thesis, De Montfort University, 1999. http://hdl.handle.net/2086/10702.
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During the course of this project, a digital radio telemetry system has been designed and shown to be capable of measuring parameters from the piston of an internal combustion engine, under load. The impetus for the work stems from the need to sample the appropriate data required for oil degradation analysis and the unavailability of system to perform such sampling. The prototype system was designed for installation within a small Norton Villiers C-30 industrial engine. This choice of engine presented significant design challenges due to the small size of the engine (components and construction) and the crankcase environment. These challenges were manifest in the choice of carrier frequency, antenna size and location, modulation scheme, data encoding scheme, signal attenuation, error checking and correction, choice of components, manufacturing techniques and physical mounting to reciprocating parts. In order to overcome these challenges detailed analysis of the radio frequency spectrum was undertaken in order to minimise attenuation from mechanisms such as, absorption, reflection, motion, spatial arrangement and noise. Another aspect of the project concerned the development of a flexible modus operandi in order to facilitate a number of sampling regimes. In order to achieve such flexibility a two-way communication protocol was implemented enabling the sampling system to be programmed into a particular mode of operation, while in use. Additionally the system was designed to accommodate the range of signals output from most transducer devices. The sampling capabilities of the prototype system were extended by enabling the system to support multiple transducers providing a mixture of output signals; for example both analogue and digital signals have been sampled. Additionally, a facility to sample data in response to triggering stimuli has been tested; specifically a sampling trigger may be derived from the motion of the piston via an accelerometer. Ancillary components, such as interface hardware and software, have been developed which are suitable for the recording of data accessed by the system. This work has demonstrated that multi-transducer, mixed signal monitoring of piston parameters, (such as temperature, acceleration etc.) using a two-way, programmable, digital radio frequency telemetry system is not only possible but provides a means for more advanced instrumentation.
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Policella, Joseph. "A GENERIC OBJECT-ORIENTED DESIGN FOR A RADIO FREQUENCY SIMULATION IN A SPACE TELEMETRY AND COMMAND ENVIRONMENT." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/613182.
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International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, NevadaIn a generic telemetry simulation the overall fidelity of the simulation is largely based on the simulated vehicle’s On-Board-Systems (OBS) engineering models that drive the generation of the telemetry. Also, the actual transfer of data between the simulated vehicle and control center depends on the ability of the Radio Frequency (RF) OBS to acquire and process the RF links thus resulting in a Acquisition of Signal or Loss of Signal (AOS/LOS) determination. The simulated RF links are a function of the communications OBS models, and the communications environment models. The communications OBS models are responsible for propagating the RF signal. Since the RF link analysis is highly integrated into the characteristics of the communications equipment and environment models, RF link software needs to be constantly redeveloped as communications equipment models change, fidelity is added, or multiple links are created. However, by using a generic objectoriented design, RF link software can process any number of differing links based on the RF characteristics of the propagated wave. As a result, the communications equipment model software can be changed to reflect possible design changes without having to rewrite the RF link software thus allowing reuse of existing code.
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Labuschagne, Adriaan S. "The design of a telemetry system for Grumeti Reserves /." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019.1/2542.
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Jacobs, Francois Jakob. "The behavioural ecology of the Orange-Vaal River yellowfish in lentic and lotic ecosystems, North-West Province, South Africa / Francois Jakob Jacobs." Thesis, North-West University, 2013. http://hdl.handle.net/10394/9514.
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Fishes are widely used by biologist as ecological indicators that measure key elements of complex systems, without having to capture the full complexity of a specific system. The Vaal River in South Africa is classified as Africa’s hardest working river and is home to, two yellowfish species that are socially and economically important. Both these yellowfish species are considered to be sensitive to changes in water quantity and quality, habitat destruction and utilisation pressure and are often used as ecological indicators to manage aquatic ecosystems. Very little however, is known about their movement, response to changing environmental variables and interspecies habitat preferences. This study therefore aims to use radio telemetry as a method to characterise and evaluate how yellowfish behaviour is influenced by changing environmental variables.
To characterise the behavioural ecology of the Vaal-Orange River yellowfish species in lentic and lotic ecosystems, Labeobarbus aeneus (n=18) and L. kimberleyensis (n=3) were fitted with externally attached radio transmitters in Boskop Dam (L. aeneus, n=4) and the Vaal River (L. aeneus, n=14) (L. kimberleyensis, n=3). Various methods were used to collect yellowfish species including: gill nets, to target mobile individuals, in deep habitats, electro-fishing (electro-narcosis) to collect yellowfish in shallow habitats and angling techniques in a wide variety of habitats. Thereafter yellowfish species were sedated and tagged with externally attached radio transmitters, before being released back into the system. Yellowfish were monitored for eleven months using a remote monitoring system together with manual monitoring surveys.
Analyses of data collected showed that L. aeneus follows distinct behavioural patterns, with some individual variations in behaviour. Labeobarbus aeneus exhibited higher movement that are associated with deeper water during daylight hours (04:00-16:00). During nocturnal periods (20:00-04:00) L. aeneus showed a decrease in movement activity and preferred shallower water compared to daytime. However, L. aeneus in the Vaal River seems to be less influenced by bright daylight and this might be due to the turbidity of the river water. Labeobarbus aeneus in Boskop Dam showed higher movement counts during full moon phases whereas L. aeneus in the Vaal River showed higher movement counts during new moon phases. All tagged fishes in Boskop Dam and in the Vaal River preferred deeper water during full moon phases than during new moon phases. Movement were significantly higher (P<0.05) with increased temperatures and shallower water in summer whereas movement significantly decreased (P<0.05) with a decrease in temperature and increased depth in autumn and winter. Seasonal movement data were, however, limited.
This study confirms that radio telemetry methods can be used to characterise the behavioural ecology of yellowfish species. In addition, the study has improved the knowledge of how environmental variables may affect the behaviour of yellowfish species. However, due to limited data and our understanding of these species, it is still uncertain how behaviour of yellowfish species can be applied as an ecological indicator of aquatic ecosystems.Thesis (MSc (Zoology))--North-West University, Potchefstroom Campus, 2013
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Jones, Charles H. "Potential Solutions to Communications During Plasmasonic Flight." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606141.
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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, NevadaAt about Mach number 10 and above, a high energy plasma field forms around a vehicle. This plasma sheath has a high attenuation factor that can cause communications black out. No practical solutions to communicating through a plasma sheath are known. In addition to standard real time data needs for test, a driving requirement to solve this problem is that most solutions will have to be designed into the vehicle. Modifications of vehicles designed to travel at these Mach numbers, especially any exterior modifications, will be extremely difficult due to effects on aerodynamics, thermal protection, and the materials used. A list of possible solutions to communications through hypersonically induced plasma has been collected over several years. This list was added to and verified during the Workshop on Communications through Plasma during Hypersonic Flight. Pros and cons of these potential solutions have been discussed and documented as well. The workshop also included a vote by the attending experts on what solutions are most promising. This paper reviews these solutions, their pros and cons, and a recommended way forward to solving this problem.
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Dossman, Bryant C. "Stopover Departure and Movement Behaviors of Migratory Songbirds." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1428055119.
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Thornér, Carl-Einar I., and Ronald A. Iltis. "LOW-COST TELEMETRY USING FREQUENCY HOPPING AND THE TRF6900™ TRANSCEIVER1." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/607519.
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International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, CaliforniaThe ISM bands have opened up new opportunities for telemetry using spread-spectrum communications. A low-cost frequency-hopping radio is described here for the 900 MHz ISM band that can be programmed with a wide range of hop and data rates. The ‘C6201 DSP from TI is used to control the frequency and data rate of the TI TRF6900 transceiver chip using a custom interface of the 6201 EVM board to the serial I/O on the 6900 evaluation board.
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Diehl, Michael, Ryan Fraser, Jonathan Green, and Jason Swain. "A TRADE STUDY TO DETERMINE THE BEST LOCATION FOR TM RECEIVERS." International Foundation for Telemetering, 2017. http://hdl.handle.net/10150/627004.
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As part of a larger effort to improve telemetry link availability, the U.S. Army Yuma Proving Ground (YPG) is currently in the process of upgrading its telemetry receivers. As YPG begins integrating new receivers into existing range infrastructure, the question of where to place these receivers to provide maximum benefit must be considered. Should the receivers be placed at each of the remote antennas or should they be centrally located at the primary telemetry site? Although many Telemetry-over-Internet Protocol (TMoIP) and radio frequency (RF) over fiber solutions exist to transport these data, there are numerous concerns including network and Cybersecurity limitations to consider when implementing either of these approaches. This paper will document the trade study conducted at YPG to explore the benefits of each approach.
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Mong, Tony Wayne. "Using radio-telemetry to determine range and resource requirements of upland sandpipers at an experimentally managed prairie landscape." Thesis, Kansas State University, 2005. http://hdl.handle.net/2097/117.
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Master of ScienceDepartment of Biology
Brett K. Sandercock
The native grasslands of North America are highly fragmented, and remaining tracts are intensively managed for grazing. Loss of tallgrass prairie and changing land management practices has caused many grassland birds that rely on these areas for breeding to decline in population numbers. To investigate resource selection and area use requirements of the upland sandpiper, we outfitted birds with radio transmitters at the experimentally managed Konza Prairie Biological Station in northeast Kansas. Two logistical challenges for wildlife telemetry projects are: minimizing the impact of radios on survival and movement, and optimizing the duration of transmitter attachment. We compared 4 methods of radio attachment for upland sandpipers under field conditions at breeding sites in tallgrass prairie. The daily probabilities of radio retention (DRR) for our 4 attachment methods were: 0.9992 (SE = 0.0005, n = 85) for a leg loop harness, 0.9801 (SE = 0.0099, n = 11) for radios glued to clipped feathers, 0.9627 (SE = 0.0085, n = 25) for radios glued directly to feathers and 0.8538 (SE = 0.0322, n = 20) for radios glued to plucked skin. The expected duration of radio attachment ranged from 1290 days for the leg loop harness, and 6 to 50 days for the glue attachment techniques. Survival rates of males (DSR = 0.9987, SE = 0.0009, n = 53) and females (DSR = 0.9988, SE = 0.0008, n = 71) were similar, and the probability of surviving the 90-day breeding season was about 0.90 in both sexes. We recommend attaching radios with glue to clipped feathers for short-term telemetry studies and a leg loop harness if longer retention is desired. The unique landscape of Konza Prairie allowed us to investigate specific tallgrass management strategies, and their impact on the range and habitat requirements of a bird that relies on the prairie for breeding. We found that upland sandpipers have large home ranges during the breeding season (male: = 199.0 ha ± 40.5 SE, n = 21, female: = 247.7 ha ± 51.7 SE, n = 23). Male home ranges were twice as large during brood-rearing ( = 200.8 ha ± 69.1 SE, n = 9) than during the nesting period ( = 67.02 ha ± 11.84 SE, n = 14, 1 = 5.14, P = 0.023). Upland sandpipers selected home range sites that had been burned the same spring (n = 44, ²3 = 31.65, P < 0.001), but did not show preference for certain habitat types within their home range ( ²3 = 1.49, P = 0.685). During brood rearing upland sandpipers used sites with higher percentages of bare ground, herbaceous and short woody vegetation, and low amounts of vegetative litter. Management strategies for the upland sandpiper should seek to preserve large contiguous tracts of tallgrass prairie that receive a heterogeneous mix of burning and grazing.
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Kasper, Eugene F., and Gary Leong. "AIR-GROUND TELEMETRY SYSTEMS FOR RESEARCH HELICOPTERS." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605377.
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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, NevadaThis paper describes the development of a compact mobile telemetry system using commercial-off-the-shelf components. The personal computer-based systems support microwave pulse code modulation and serial spread-spectrum radio modem telemetry. The mobile ground station provides data display and archiving of test activities, air-ground communications between experimenters and the flight test crew, and acts as a flight test Differential Global Positioning System base station. The success of the systems indicates that functional telemetry capabilities can be established for small flight test programs at modest cost.
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Thomas, Willie L. II, Samuel Berhanu, and Nathan Richardson. "System Framework for a Multi-Band, Multi-Mode Software Defined Radio." International Foundation for Telemetering, 2014. http://hdl.handle.net/10150/577442.
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ITC/USA 2014 Conference Proceedings / The Fiftieth Annual International Telemetering Conference and Technical Exhibition / October 20-23, 2014 / Town and Country Resort & Convention Center, San Diego, CAThis paper describes a system framework for a multi-band, multi-mode software defined radio (MBMM SDR) being developed for next-generation telemetry applications. The system framework consists of the multi-band front-end (MBFE), the multi-mode digital radio (MMDR), and the configuration and control (C2) sub-systems. The MBFE consists of an L/S/C-band transceiver architecture that provides wideband operation, band selection, and channel tuning. The MMDR consists of the software and firmware components for high-speed digital signal processing for the telemetry waveforms. Finally, the C2 consists of the software and hardware components for system configuration, control and status. The MBFE is implemented as a standalone hardware sub-system, while the MMDR and C2 are integrated into a single hardware subsystem that utilizes state-of-the-art system-on-chip (SoC) technology. Design methodologies, hardware architectures, and system tradeoffs are highlighted to meet next-generation telemetry requirements for improved spectrum efficiency and utilizations. Approved for public release; distribution is unlimited (412TW-PA-14281).
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Hennefer, Jordan P. "Analyses of Greater Sage-Grouse (Centrocercus urophasianus) Translocation Release Methods and Chick Survival in Strawberry Valley, Utah." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1754.pdf.
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Trevelin, Leonardo Carreira [UNESP]. "Recolonização de uma área restaurada por morcegos da família Phyllostomidae: padrões de diversidade e uso do espaço." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/99573.
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Made available in DSpace on 2014-06-11T19:30:16Z (GMT). No. of bitstreams: 0
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trevelin_lc_me_rcla.pdf: 747132 bytes, checksum: c85a03f1c487f9282bfe5ece3a4f967e (MD5)A restauração florestal é vista como importante forma de mitigação do processo histórico de perda de biodiversidade na Floresta Atlântica. Recentemente, houve um aumento no número de projetos de restauração ecológica com foco no estabelecimento de uma comunidade sustentável, impulsionada pela dinâmica sucessional. A avaliação do sucesso destes projetos depende de seu monitoramento através de indicadores que permitam analisar o reestabelecimento desta dinâmica. Este monitoramento ainda é uma prática recente, comumente relacionada a estudos sobre estrutura e composição da vegetação, e estudos que contemplem componentes da fauna ainda são escassos. Neste contexto, morcegos da família Phyllostomidae são excelentes modelos de estudo, pois apresentam características ecológicas que fazem deste grupo um potencial indicador da restauração de processos ecológicos em áreas em recuperação, especialmente nos estágios iniciais de sucessão. Visando suprir essa lacuna, no presente estudo, espécies deste grupo taxonômico foram escolhidas como modelos para se responder perguntas referentes aos efeitos da recuperação de uma área de floresta Atlântica que se encontra em processo de restauração ecológica. O projeto tem sete anos de idade, e foi desenvolvido no município de Mogi Guaçú/SP. No capítulo 1, através de caracterização temporal da assembléia de morcegos filostomídeos, abordamos a seguinte questão: está havendo recolonização da área por estas espécies? Com os resultados obtidos pudemos demonstrar que a as mudanças sucessionais observadas na vegetação da área recuperada após quatros da implantação do projeto resultaram em alterações na assembléia de morcegos filostomideos, sugerindo a recolonização da área. Por outro lado, concluímos que a assembléia estudada se apresentava uma estrutura em estágio intermediário entre assembléias...
Forest Restoration is seen as an important way to mitigate the historical process of biodiversity loss in the Atlantic Forest. Recently, there has been an increase in the development of Ecological Restoration projects focusing on the establishment of a selfsustainable community, driven by successional dynamics. Evaluation of the success of these projects depends on its monitoring through indicators that allow us to analyze the reestablishment of this dynamics. This is a recent practice, commonly related to studies of vegetation structure and composition, and studies that contemplate faunal components are scarce. In this context, Phyllostomidae bats are thougth to be excelent study models. Because of their ecological features they are potential indicators of the restoring of ecological processes in rehabilitated areas, particularly in the initial stages of succession. In order to fill this gap, in the present study, species from this taxonomic group were selected as models to answer questions related to the effects of the rehabilitation of an Atlantic Forest area that is in the process of ecological restoration. The restoration projetc is seven years old, and is located in the municipality of Mogi Guaçú, State of São Paulo. In Chapter 1, through a temporal characterization of the Phyllostomidae bat species assemblage, we adressed the following question: is there a recolonization of the area by species from this taxonomic group? With the obtained results, we showed that, after four years, the successional changes which the area has been submmited to resulted in changes in the Phyllostomidae bat assemblage, suggesting species recolonization of the area. On the other hand, we concluded that the studied assemblage presented a structure in an intermediate stage between degrated areas and native forest remnants. In Chapter 2, we present the use of foraging and roosting habitat... (Complete abstract click electronic access below)
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Barratt, David, and n/a. "Movement patterns and prey habits of house cats felis catus (l.) in Canberra, Australia." University of Canberra. Resource, Environmental & Heritage Sciences, 1995. http://erl.canberra.edu.au./public/adt-AUC20060607.160345.
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House cat movements in Canberra suburbs adjacent to grassland and forest/woodland
areas were examined using radio-telemetry over 9 months. Information on the
composition of vertebrate prey caught by house cats in Canberra was also collected by
recording prey items deposited at cat owners' residences over 12 months.
Home range areas of 10 suburban house cats, and a colony of seven farm cats, were
examined using 95% convex polygons. Nocturnal home range areas of the suburban
cats varied between 0.02 and 27.93 ha (mean 7.89 ha), and were larger than diurnal
home range areas (range 0.02 to 17.19 ha - mean 2.73 ha). Nocturnal home range areas
of cats from the farm cat colony varied between 1.38 and 4.46 ha (mean 2.54 ha), and
were also larger than diurnal home range areas (range 0.77 to 3.70 ha - mean 1.70 ha).
Activity levels were greater at night than during the day, though diel activity patterns
varied seasonally in response to ambient temperature. Four suburban house cats moved
between 390 m and 900 m into habitat adjoining the suburb. Movements further than
100-200 m from the suburb edge were always made at night. Polygons describing the
home ranges of these animals were strongly spatially biased away from the suburban
environment, though the cats spent the majority of their time within the bounds of the
suburb.
In addition to nocturnal and diurnal effects, home range areas, and subsequently habitat
utilisation, appeared primarily determined by the density and spatial distribution of cats
utilising separate food resources, and the dominance of individual cats in local social
hierarchies, rather than gender or neutering effects. Home ranges of cats in the farm cat
colony overlapped extensively, as did those of cats living at the same suburban
residence. There was little or no overlap between the home ranges of cats from different
residences. Barriers, in the form of busy roads, appeared to also significantly influence
home range size and shape.
Within home range areas, house cat movements during the day appeared strongly
influenced by available cover (drains, tall grass, fences and shrubs etc.), and the location
of resting/sunning spots and hunting sites close to home. At night, movement patterns
appeared influenced by the location of favoured hunting sites toward the outer edges of
home range areas (in this study, tall grass and scrub/forest habitat, and farm buildings).
Nineteen hundred and sixty one prey items representing 67 species were reported or
collected. Sixty-four percent of the prey items were introduced mammals, with native
birds comprising 14%, introduced birds 10%, unidentified birds 3%, reptiles 7%,
amphibians 1% and native mammals 1%. Predation appeared to be largely
opportunistic with respect to spatial and temporal (daily and seasonal) prey availability
and accessibility. All amphibians and 62% of mammals taken by cats not confined at
night, were caught at night. In contrast, 70% of birds caught, and 90% of reptiles, were
taken during the day (45% of birds between 0600 h and 1200 h, and 61% of reptiles
between 1200 h and 1800 h). There was some evidence that small mammals are
preferred prey of house cats.
The mean number of prey items reported per cat over 12 months - 10.2 � 2.66 (2SE,
n=138) - was significantly lower than mean predation per cat per year - 23.3 � 6.16
(2SE, n=138) - estimated by cat owners before the prey survey began. Seventy percent
of cats were observed to catch less than 10 prey items over 12 months, but for 6% of
cats, more than 50 prey items were recorded. Because counts of the amount of prey
caught per house cat per unit time were highly positively skewed, data assumptions and
statistical parameters used to extrapolate results from the study sample of cats, to the
house cat population of Canberra, had a significant effect on estimates of total predation
in Canberra. The precision of the total predation estimate was low (± 25%), from a
sample of 0.3% of the Canberra house cat population. The accuracy of such estimates
are dependent on how representative the study cat sample is of the wider house cat
population, and on the proportion of prey items not observed by cat owners.
The total amount of prey taken was not significantly influenced by cat gender, age when
desexed, or cat breed. Nor did belling or the number of meals provided per day have a
significant influence on predatory efficiency. Cat age and the proportion of nights spent
outside explained approximately 11 % of the variation in the amount of prey caught by
individual cats. House cat density and distance to prey source areas (rural/grassland
habitat) explained 43% of variation in predation on introduced mammals and birds.
The impact of predation beyond suburb edges is likely to be most significant on
populations of small to medium sized arboreal and ground-dwelling mammals, because
of their nocturnal nature, and because they appear to be preferred prey types of house
cats. Impacts on diurnally active prey, such as most birds and reptiles, are likely to be
confined to within 200 m of residential housing (possibly further where good cover is
available). Properly enforced nocturnal confinement should restrict the range sizes of
cats that roam widely and utilisation of habitat beyond suburb edges, and also reduce
predation on mammals and amphibians. Night-time curfews however, are unlikely to
greatly reduce predation on diurnally active species, including most birds and reptiles.
Curfews are currently neither widely adopted nor effectively practiced in Canberra.
Estimates of predation by house cats, particularly extrapolated estimates, should be
treated with caution. They do not necessarily reflect relative impacts on different prey
types. Nor do high rates of predation prove prey populations are detrimentally effected,
particularly in urban environments. Nonetheless, on a small (backyard) scale in
suburban environments, and in habitat within 1 km of residential housing, including
isolated private properties, predation by individual cats may threaten populations of
native wildlife. Hunting by house cats is particularly undesirable in relatively
undisturbed habitat because of fundamental differences in the ecological processes
operating in these areas (especially isolated remnants) compared with contrived and
modified suburban environments. Adverse impacts on native fauna will always be
potentially greatest in undisturbed habitat adjacent to new residential developments
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Enqvist, Martin. "Undersökning av lekområden för mal (Silurus glanis) i Båven." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-114076.
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In Sweden, the Wels catfish (Silurus glanis) is a protected species and exist in only three known water systems in the country. With spawning habitats being destroyed by human activities, it is important to know more about the Swedish catfish’s reproductive behaviour and habitat preferences in order to protect the species. In this report, catfishes tagged with transmitters was tracked using radio telemetry, day and night for two weeks in Lake Båven during the spawning period. Habitat data on the depth, bottom hardness and vegetation was collected in known and potential spawning areas in the lake using an echo sounder. Habitat preference analysis indicated depth and bottom hardness as important factors when catfishes chose spawning habitat. The analysis did not indicate vegetation to be important. Habitat data from spawning positions of tagged catfishes was used to identify other sites suitable for reproduction in nearby areas. Home range during spawning was calculated for two catfishes and was found to be 1.05 and 1.35 ha. Based on this information and the identified sites suitable for spawning, the total available spawning habitat in the study area was found to be enough for 12 to 15 catfishes. This is relatively few, and indicates that additional spawning sites would benefit the population.
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Krynak, Timothy J. "Bat Habitat Use and Roost Tree Selection for Northern Long-eared Myotis (Myotis septentrionalis) in North-Central Ohio." John Carroll University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=jcu1283341332.
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Johnston, Jennifer Lynn Atkinson Samuel F. "Home range analysis of rehabilitated and released great horned owls (Bubo virginianus) in Denton County, Texas, through radio telemetry." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-5159.
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Johnston, Jennifer Lynn. "Home range analysis of rehabilitated and released great horned owls (Bubo virginianus) in Denton County, Texas, through radio telemetry." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc5159/.
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Raptor rehabilitation has become commonplace globally, yet studies on the survival and adaptation of great horned owls (Bubo virginianus) after release has been neglected to an appreciable extent. The primary objective of this study is to provide quantitative data on the success of rehabilitated and released great horned owls in the North Texas region. Owls (N=12) were rehabilitated and released onto the Ray Roberts Greenbelt Corridor in Denton County, Texas, and monitored using radio telemetry to evaluate home range (November 2002 - February 2005). With approximately 75% of the birds released for this study surviving until transmitter battery failure, it is believed that the rehabilitation process was successful for these birds.
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Dalosto, Marcelo Marchet. "COMPORTAMENTO AGONÍSTICO, DESLOCAMENTO E PADRÕES DE ATIVIDADE DE LAGOSTINS NEOTROPICAIS (DECAPODA: PARASTACIDAE)." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/5282.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis study investigated the behavior of crayfishes of the genus Parastacus. Two experiments were performed: one describing and comparing the agonistic behavior of Parastacus brasiliensis and Parastacus pilimanus, in laboratory; and another experiment, in the field, where movement and activity of P. pilimanus were monitored through radio-telemetry. For the first experiment, individuals of both species were captured and taken to the lab, were they were paired according to carapace and cheliped length. Ten pairs of P. brasiliensis and thirteen of P. pilimanus, were formed, being acclimated individually. The pairs were allowed to interact for 20min, during which they were filmed. Quantifications of aggressiveness, relative aggressiveness, first bout duration, mean bout duration, number of bouts, latency period, representativity of aggressive behaviors, number of approaches, number of antennal whips and number of chela punches were made. The species were compared regarding the formation of dominance hierarchies. P. brasiliensis exhibited significantly higher values for all parameters, except latency, number of bouts and antenal whips (only winners), while P. pilimanus executed chela punch more frequently. Formation of dominance hieararchies was more frequent in P. pilimanus than in P. brasiliensis. These results point the fossorial species as less aggressive. The behavioral repertory differed from the expected for crayfish. Another difference was a non-escalated aggression. In the second phase, two campaigns were performed, one in the spring of 2010 and another in the spring of 2011. In each, five P. pilimanus were monitored for seven days through radio-telemetry. Verifications of position of crayfishes were made at 13, 19, 22, 1, 4 and 7h. Air temperature, water temperature, flow speed, dissolved oxygen, pH and conductivity were measured daily. Daily displacements were compared. The crayfish were tested for preferably diurnal/nocturnal activity, preferably upstream/downstream movements and permanence within burrows. The influence of abiotic parameters in the animal s displacement and the circadian activity were also checked. Only one crayfish presented significantly higher activity than two other crayfish. There were no significant differences between for movements. The permanence of the animals was higher within burrows than in the streambed, and none of the abiotic parameters affected movement. These results were the same for both campaigns. Between the campaigns, no differences were found for any parameters. The circadian activity analysis revealed that only three crayfish (one in 2010 and two in 2011) showed activity concentrated between 19h49min and 02h11min. The results point that P. pilimanus makes short, but frequent displacements. The high permanence within burrows characterizes this species as a primary burrower. The low dispersal potential of the studied population highlights its vulnerability towards a possible disturbs. This weak dispersion ability might also be related to the occurrence of intersexuality in the group. Both these studies relate to unknown subjects, when concerning the behavior of Neotropical crayfishes, which stand out for their differentiation, in relation to the general patterns within the Astacida, especially regarding the Northern Hemisphere species, better studied so far.
Este trabalho abordou o comportamento dos lagostins do gênero Parastacus. Foram realizados dois experimentos: um descrevendo e comparando o comportamento agonístico de Parastacus brasiliensis e P. pilimanus, em laboratório; e outro, em campo, objetivando o acompanhamento do deslocamento e da atividade de P. pilimanus através de da técnica de radiotelemetria. Para o primeiro, os indivíduos de ambas as espécies foram capturados, e levados ao laboratório, aonde foram pareados de acordo com o comprimento cefalotorácico e dos própodos quelares. Dez duplas de P. brasiliensis e 13 de P. pilimanus foram formadas, sendo aclimatados individualmente. As duplas foram filmadas por 20min, durante os quais puderam interagir. Foram quantificadas a agressividade, a agressividade relativa, a duração do primeiro embate, a duração média dos embates, o número de embates, o período de latência, a representatividade de comportamentos agressivos, o número de aproximações, o número de chicotes com antena e o número de batidas com quelípodo. As espécies foram comparadas quanto à formação de hierarquias de dominância. Parastacus brasiliensis apresentou valores significativamente maiores do que P. pilimanus em todos os parâmetros, exceto latência, número de embates e chicote com antenas (apenas vencedores), enquanto P. pilimanus executou mais o ato bater com quelípodo . Formação de hierarquias foi mais frequente em P. pilimanus do que em P. brasiliensis. Estes resultados apontam a espécie fossorial, P. pilimanus, como menos agressiva. O repertório comportamental diferiu do esperado para lagostins. Outra diferença foi a agressão não-escalada. Na segunda etapa, foram realizadas duas campanhas, uma na primavera de 2010 e outra na primavera de 2011. Em cada, cinco indivíduos de P. pilimanus foram monitorados por sete dias através de radiotelemetria. Verificações de posição foram realizadas às 13, 19, 22, 1, 4 e 7h. Temperatura do ar, temperatura da água, velocidade da correnteza, oxigênio dissolvido, pH e condutividade foram medidos diariamente. Os deslocamentos dos indivíduos foram comparados. Os lagostins foram testados quanto à atividade, deslocamento preferencial à montante ou à jusante permanência nas galerias. A influência dos parâmetros abióticos no deslocamento e a atividade circadiana também foram verificadas. Apenas um lagostim, apresentou atividade significativamente maior que dois outros lagostins. Não houve diferença significativa entre os deslocamentos. A permanência dos animais foi maior dentro das tocas do que no riacho, e nenhum dos parâmetros abióticos influenciou o deslocamento. Estes resultados foram os mesmos para as duas campanhas. Entre as campanhas, não houve diferença em nenhum parâmetro. A análise de atividade circadiana revelou que apenas três lagostins apresentaram atividade concentrada entre 19h49min e 02h11min. Os resultados apontam que P. pilimanus move-se pouco, embora constantemente. A alta permanência nas tocas caracteriza essa espécie como escavadora primária. O baixo potencial de dispersão dos indivíduos da população investigada ressalta sua vulnerabilidade frente a distúrbios ambientais. Este baixo potencial de dispersão também pode estar relacionado com a ocorrência de intersexualidade no grupo?. Ambos os trabalhos abordam aspectos não documentados do comportamento de lagostins neotropicais, que chamam atenção por se diferenciarem dos padrões gerais dentro dos Astacida, principalmente em relação às espécies do hemisfério norte, as melhores estudadas até o momento.
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Stach, Robert. "Migratory routes and stopover behaviour in avian migration." Doctoral thesis, Stockholms universitet, Zoologiska institutionen, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-126975.
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Migratory birds, some small and light weight as matchboxes, engage in seasonal inter-continental journeys in order to take advantage of the long summer days and abundance of food at northern latitudes to breed and raise their young, and then escape the harsh winters by migrating to lower latitudes. This thesis deals with two important aspects of migration, the routes taken during migration and the birds’ behaviour at stopovers. The migratory routes are for many species unknown, whole or in part, and this is especially true for species that migrate nocturnally. At stopovers birds replenish fuel reserves that powers migratory flight, and studying how birds utilise stopovers is important in order to understand how migration is organised. In this thesis I have used modern tracking technology to study both continental wide movements of thrush nightingales (Luscinia luscinia) and common rosefinches (Carpodacus erythrinus) using small light-level geolocators, and smaller scale movements at a single stopover site of garden warblers (Sylvia borin) using miniature radio-transmitters. I have also studied the fuelling behaviour of garden warblers during autumn migration in the field and in the lab, and great reed warblers (Acrocephalus arundinaceus) at a stopover site on Crete during spring migration after the Sahara crossing. The thesis discusses the significance of several aspects of migration shown by the birds that would have been very difficult to detect without the aid of modern tracking technology, such as loop migration, prolonged stops during migration, multiple wintering sites, and nocturnal relocations at stopover sites. Studies carried out at stopover sites also show that garden warblers and great reed warblers can attain large fuel loads even at sites where they have no barrier to cross and this might be a result of good foraging conditions. The thesis also highlights the importance of combining different techniques when studying stopover behaviour to get reliable estimates on stopover durations and fuel deposition rates as well as the importance of choosing sites preferred by birds when planning stopover studies.At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 4: Manuscript. Paper 5: Manuscript.
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Kučera, Petr. "Bezdrátový přenos letových údajů z letounu na krátkou vzdálenost." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217815.
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This diploma thesis deals with the flight data wireless transmission from aircraft to the ground station. This is the data sent from the acrobatic aircraft during races, specifically the GPS position and data from sensors of acceleration and rotation of the aircraft. It dealt with the theoretical analysis of the radio link and design of device that receives radio transmission. In aircraft it is dealt with data capturing and their deployment through the radio module. Data are sending to another post-processing on the ground station after receiving. There are two solutions of radio module and in the last part is a solution for capturing data from more airplanes.