Journal articles: 'Aerial survey'

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Bewley, Robert H. "Aerial survey for archaeology." Photogrammetric Record 18, no. 104 (November 24, 2003): 273–92. http://dx.doi.org/10.1046/j.0031-868x.2003.00023.x.

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Farrow, J. E. "AERIAL SURVEY CAMERA TRIALS." Photogrammetric Record 12, no. 68 (August 26, 2006): 167–74. http://dx.doi.org/10.1111/j.1477-9730.1986.tb00555.x.

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Martin, Maxence, Nicole J. Fenton, and Hubert Morin. "Boreal old-growth forest structural diversity challenges aerial photographic survey accuracy." Canadian Journal of Forest Research 50, no. 2 (February 2020): 155–69. http://dx.doi.org/10.1139/cjfr-2019-0177.

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The erosion of old-growth forests in boreal managed landscapes is a major issue currently faced by forest managers; however, resolving this problem requires accurate surveys. The intention of our study was to determine if historic operational aerial forest surveys accurately identified boreal old-growth forests in Quebec, Canada. We first compared stand successional stages (even-aged vs. old-growth) in two aerial surveys performed in 1968 (preindustrial aerial survey) and 2007 (modern aerial survey) on the same 2200 km2 territory. Second, we evaluated the accuracy of the modern aerial survey by comparing its results with those of 74 field plots sampled in the study territory between 2014 and 2016. The two aerial surveys differed significantly; 80.8% of the undisturbed stands that were identified as “old-growth” in the preindustrial survey were classified as “even-aged” in the modern survey, and 60% of the stands identified as “old-growth” by field sampling were also erroneously identified as “even-aged” by the modern aerial survey. The scarcity of obvious old-growth attributes in boreal old-growth forests, as well as poorly adapted modern aerial survey criteria (i.e., criteria requiring high vertical stratification and significant changes in tree species composition along forest succession), were the main factors explaining these errors. It is therefore likely that most of Quebec’s boreal old-growth forests are currently not recognized as such in forest inventories, challenging the efficacy of sustainable forest management policies.

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Bhattacharjee, Gargi, and Saswat K. Pujari. "Aerial Image Segmentation: A Survey." International Journal of Applied Information Systems 12, no. 5 (August 8, 2017): 28–34. http://dx.doi.org/10.5120/ijais2017451702.

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Vermeulen, Cédric, Philippe Lejeune, Jonathan Lisein, Prosper Sawadogo, and Philippe Bouché. "Unmanned Aerial Survey of Elephants." PLoS ONE 8, no. 2 (February 6, 2013): e54700. http://dx.doi.org/10.1371/journal.pone.0054700.

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Bonyan Khamseh, Hossein, Farrokh Janabi-Sharifi, and Abdelkader Abdessameud. "Aerial manipulation—A literature survey." Robotics and Autonomous Systems 107 (September 2018): 221–35. http://dx.doi.org/10.1016/j.robot.2018.06.012.

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Anikeeva, I. A., N. M. Babashkin, S. A. Kadnichanskiy, and S. S. Nekhin. "The Possibility and Effectiveness of Using Drones When Performing Cadastral Works." Geodesy and Cartography 938, no. 8 (September 20, 2018): 44–52. http://dx.doi.org/10.22389/0016-7126-2018-938-8-44-52.

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The analysis of the capabilities and effectiveness of the aerial survey using a drone for determining the coordinate points of the real estate objects’ boundaries with photogrammetric method in doing cadastral works basing on established requirements is given. The matters of coordinates’ definition accuracy are considered basing on the results of research trials of hardware and software systems of digital aerial photography and photogrammetric processing based on using drones and the aerial photos of the polygon. The results of a comparative analysis of the aerial survey effectiveness using drones of various types and traditional aerial survey with manned aircraft are given. The factors affecting the efficiency are analyzed. Issues of creating the legislation base for aerial survey with drones are discussed. The conclusion is made about possibility of aerial survey using unmanned aircraft to determine the coordinates of the real estate objects’ boundaries with precision meeting the established requirements. Planning aerial surveys with drones for cadastral tasks should be primarily based on economic factors (time and cost), taking into account the specific conditions of the subject and used hardware and software.

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Elliott, Kyle H., Paul A. Smith, and Victoria H. Johnston. "Aerial Surveys Do Not Reliably Survey Boreal-nesting Shorebirds." Canadian Field-Naturalist 124, no. 2 (April 1, 2010): 145. http://dx.doi.org/10.22621/cfn.v124i2.1053.

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Aerial surveys have been used as a method for surveying boreal-nesting shorebirds, which breed in difficult-to-access terrain; however, the fraction of breeding birds observed from the air is unknown. We investigated rates of detection by conducting simultaneous air and ground surveys for shorebirds at three sites in the boreal forest of the Northwest Territories, Canada, in 2007. Helicopter surveys included both pond-based surveys where the helicopter flew around the perimeter of each wetland and transect-based surveys where observers recorded birds seen on line transects. Ground surveys involved intensive observation, territory mapping and nest searching in 5 km2 of plots over a period of 5-6 weeks. Shorebird densities observed from the helicopter were highest near large bodies of water. No shorebirds were observed over closed forest despite breeding densities on ground surveys being highest in closed forest. Detection rates were very low, varied among species and aerial survey types, and were inconsistent over time. Ground-based observations showed that the shorebirds often did not flush in response to the helicopter passing overhead. Owing to poor rates of detection, we conclude that helicopter surveys are not an appropriate method for surveying breeding shorebirds in boreal habitats, but may have some utility for monitoring birds' use of stop-over locations.

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Mohiuddin, Abdullah, Taha Tarek, Yahya Zweiri, and Dongming Gan. "A Survey of Single and Multi-UAV Aerial Manipulation." Unmanned Systems 08, no. 02 (February 4, 2020): 119–47. http://dx.doi.org/10.1142/s2301385020500089.

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Aerial manipulation has direct application prospects in environment, construction, forestry, agriculture, search, and rescue. It can be used to pick and place objects and hence can be used for transportation of goods. Aerial manipulation can be used to perform operations in environments inaccessible or unsafe for human workers. This paper is a survey of recent research in aerial manipulation. The aerial manipulation research has diverse aspects, which include the designing of aerial manipulation platforms, manipulators, grippers, the control of aerial platform and manipulators, the interaction of aerial manipulator with the environment, through forces and torque. In particular, the review paper presents the survey of the airborne platforms that can be used for aerial manipulation including the new aerial platforms with aerial manipulation capability. We also classified the aerial grippers and aerial manipulators based on their designs and characteristics. The recent contributions regarding the control of the aerial manipulator platform is also discussed. The environment interaction of aerial manipulators is also surveyed which includes, different strategies used for end-effectors interaction with the environment, application of force, application of torque and visual servoing. A recent and growing interest of researchers about the multi-UAV collaborative aerial manipulation was also noticed and hence different strategies for collaborative aerial manipulation are also surveyed, discussed and critically analyzed. Some key challenges regarding outdoor aerial manipulation and energy constraints in aerial manipulation are also discussed.

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Hlotov, Volodymyr, Alla Hunina, Ihor Kolb, Vadim Kolesnichenko, and Ihor Trevoho. "THE STUDY OF THE “CETUS” UNMANNED AERIAL VEHICLE FOR TOPOGRAPHIC AERIAL SURVEYING." Geodesy and cartography 47, no. 2 (August 16, 2021): 96–103. http://dx.doi.org/10.3846/gac.2021.12120.

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The work aims to analyze and study the possibilities of using “Cetus” unmanned aerial vehicle (UAV) for performing topographic aerial surveys. The authors developed and tested aircraft-type UAV for topographic aerial photography. The studies were conducted on a specialized landfill, at which there is an appropriate number of situational points whose coordinates are determined with high accuracy. These points were used as both reference and control points. The obtained UAV aerial survey materials were subjected to a phototriangulation process to determine the orientation elements and to analyze, first and foremost, the angular orientation elements. The surveying was carried out on a mountainous territory, where the spatial coordinates of 37 situational points were determined by the method of ground-based GPS survey with an average accuracy of up to 0.05 m. These points were used as reference and control points. Aerial photography was performed in such a way that the scale of the images was as uniform as possible. The design solutions implemented in the Cetus UAV provide all the possibilities to perform aerial surveys of territories in strict compliance with the projected flight parameters. UAV equipment provides the necessary real-time correction of the position of the aerial camera. At the same time the optimum straightness of routes, stability of scales and mutual overlapping of pictures is reached. Regarding the accuracy of obtaining the spatial coordinates of the points of terrain objects, using “Cetus” UAV surveys, plans can even be made on a scale of even 1: 1000. As a result of the creation of the UAV “Cetus”, it became possible to perform the topographic aerial survey of the territories and to create large-scale orthophotos that fully meet the instructions. As a result of testing the “Cetus” UAV, it can be used in production processes when drawing up topographic plans for a large-scale series: 1: 1000 – 1: 5000, which will significantly save the cost of performing topographic work.

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Peterman, V., and M. Mesarič. "LAND SURVEY FROM UNMANED AERIAL VEICHLE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XXXIX-B1 (July 27, 2012): 447–51. http://dx.doi.org/10.5194/isprsarchives-xxxix-b1-447-2012.

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Wigglesworth, J. B., and A. L. Allan. "Digital Aerial Survey: Theory and Practice." Survey Review 37, no. 288 (April 2003): 162–64. http://dx.doi.org/10.1179/sre.2003.37.288.162.

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Johnson, Erik W., and Jennifer Ross. "Quantifying error in aerial survey data." Australian Forestry 71, no. 3 (January 2008): 216–22. http://dx.doi.org/10.1080/00049158.2008.10675038.

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Sach, J. R. "Digital Aerial Survey: Theory and Practice." Photogrammetric Record 18, no. 102 (June 2003): 179–80. http://dx.doi.org/10.1111/0031-868x.t01-1-00011_3.

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Chung, Soon-Jo, Aditya Avinash Paranjape, Philip Dames, Shaojie Shen, and Vijay Kumar. "A Survey on Aerial Swarm Robotics." IEEE Transactions on Robotics 34, no. 4 (August 2018): 837–55. http://dx.doi.org/10.1109/tro.2018.2857475.

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Carter, William, Ramesh Shrestha, and Juan Fernandez-Diaz. "Estimating Ancient Populations by Aerial Survey." American Scientist 107, no. 1 (2019): 30. http://dx.doi.org/10.1511/2019.107.1.30.

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Sly, W. E. "THE CALIBRATION OF AERIAL SURVEY CAMERAS." Photogrammetric Record 6, no. 31 (August 26, 2006): 59–74. http://dx.doi.org/10.1111/j.1477-9730.1968.tb00914.x.

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Dawe, H. G. "AERIAL SURVEY: COLONY OF HONG KONG." Photogrammetric Record 6, no. 34 (August 26, 2006): 335–47. http://dx.doi.org/10.1111/j.1477-9730.1969.tb00949.x.

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OHGA, Tomowo. "Mapping and Positioning with Aerial Survey." Journal of the Japan Society for Precision Engineering 72, no. 3 (2006): 289–94. http://dx.doi.org/10.2493/jjspe.72.289.

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Bushaw, Jacob, Kevin Ringelman, and Frank Rohwer. "Applications of Unmanned Aerial Vehicles to Survey Mesocarnivores." Drones 3, no. 1 (March 22, 2019): 28. http://dx.doi.org/10.3390/drones3010028.

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With the widespread extirpation of top predators over the past two centuries, mesocarnivores play an increasingly important role in structuring terrestrial trophic webs. However, mesocarnivores are difficult to survey at a population level because their widely spaced territories and nocturnal behavior result in low detection probability. Existing field survey techniques such as track plates and motion-sensitive camera traps are time-consuming and expensive, and yet still yield data prone to systematic errors. Unmanned Aerial Vehicles (UAVs) have recently emerged as a new tool for conducting population surveys on a wide variety of wildlife, eclipsing the efficiency and even accuracy of traditional methods. We used a UAV equipped with a thermal imaging camera to conduct nighttime mesocarnivore surveys in the prairie pothole region of southern Manitoba, Canada. This was part of a much larger ecological study evaluating how lethal removal of mesocarnivores affects duck nest success. Here, our objective was to describe methods and equipment that were successful in detecting mesocarnivores. We used a modified point-count survey from six waypoints that surveyed a spatial extent of 29.5 ha. We conducted a total of 200 flights over 53 survey nights during which we detected 32 mesocarnivores of eight different species. Given the large home ranges of mesocarnivores relative to the spatial and temporal scale of our spot sampling approach, results of these types of point-count surveys should be considered estimates of minimum abundance and not a population census. However, more frequent sampling and advanced statistics could be used to formally estimate population occupancy and abundance. UAV-mounted thermal imaging cameras appear to be an effective tool for conducting nocturnal population surveys on mesocarnivores at a moderate spatial scale.

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Burshtynska, Khrystyna, Andrzej Mazur, Maksym Halochkin, Yevhenii Shylo, and Iryna Zayats. "GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY 95,2022, no. 95 (June 28, 2022): 53–64. http://dx.doi.org/10.23939/istcgcap2022.95.053.

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The aim of the work is to investigate the accuracy of the DEM of nearshore areas using UAV material. One of the important issues in hydrological flood modelling is the high accuracy of the DEM. In the case of a complex relief type, which is associated with meandering riverbeds, it is proposed to use UAV surveys to create a DEM. Hydrological modelling involves the following main steps: creation of high precision DEMs, determination of Manning coefficients to account for the influence of the underlying surface and determination of water level changes based on the water level graph derived from observations at hydrometeorological stations. This research presents the construction of a high-precision DEM, based on a UAV survey. For high-precision modeling, the fundamental issue is the consideration of vegetation in the nearshore areas and the choice of the optimal time period for the survey. The aim of the study is to develop a methodology for the construction of a high-precision DEM from UAV data, investigate the possibilities of eliminating the influence of vegetation on point marks using software methods, determine planned channel shifts and compare the accuracy of DEM construction for surveys conducted in June 2017 and in November 2021. The section at the transition from the mountainous to marshy-hilly part of the Dniester River near the town of Stary Sambir, with complex morphometric and hydrological characteristics of the channel and banks at the site of the complex meandering of the river in a rugged ravine area was the study object of this work. Results. It was found that for 4 years between two surveys, the planned displacements of some points are up to 25-31 meters. A priori estimation of coordinates determination by points from the GNSS-receiver was carried out, the accuracy of point coordinates determination is 2-3 cm. The a priori estimate of the accuracy of determining the coordinates of points from the input survey data is: for plan coordinates - 4-6 cm for two survey periods, the error in determining the marks of points for different values of the baseline - 21-31 cm. It has been established, that the program methods of accounting of influence of high vegetation do not give the possibility of its full accounting, the average square error, in places of such vegetation makes 0,64 m. Therefore, it is necessary to carry out UAV survey in the leafless period of the year, early spring or late autumn. Scientific novelty consists in the study of the possibility of constructing a high-precision DEM for different types of vegetation from materials obtained from UAVs. The results can be used for hydrological modeling of river channels with complex hydromorphological characteristics.

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Elmokadem, Taha, and Andrey V. Savkin. "Towards Fully Autonomous UAVs: A Survey." Sensors 21, no. 18 (September 16, 2021): 6223. http://dx.doi.org/10.3390/s21186223.

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Unmanned Aerial Vehicles have undergone rapid developments in recent decades. This has made them very popular for various military and civilian applications allowing us to reach places that were previously hard to reach in addition to saving time and lives. A highly desirable direction when developing unmanned aerial vehicles is towards achieving fully autonomous missions and performing their dedicated tasks with minimum human interaction. Thus, this paper provides a survey of some of the recent developments in the field of unmanned aerial vehicles related to safe autonomous navigation, which is a very critical component in the whole system. A great part of this paper focus on advanced methods capable of producing three-dimensional avoidance maneuvers and safe trajectories. Research challenges related to unmanned aerial vehicle development are also highlighted.

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Fleming, Peter J. S., and John P. Tracey. "Some human, aircraft and animal factors affecting aerial surveys: how to enumerate animals from the air." Wildlife Research 35, no. 4 (2008): 258. http://dx.doi.org/10.1071/wr07081.

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Aerial surveys of wildlife involve a noisy platform carrying one or more observers moving over animals in order to quantify their abundance. This simple-sounding system encapsulates limits to human visual acuity and human concentration, visual attention, salience of target objects within the viewed scene, characteristics of survey platforms and facets of animal behaviours that affect the detection of animals by the airborne observers. These facets are too often ignored in aerial surveys, yet are inherent sources of counting error. Here we briefly review factors limiting the ability of observers to detect animals from aerial platforms in a range of sites, including characteristics of the aircraft, observers and target animals. Some of the previously uninvestigated limitations identified in the review were studied in central and western New South Wales, showing that inaccuracies of human memory and enumeration processes are sources of bias in aerial survey estimates. Standard protocols that minimise or account for the reviewed factors in aerial surveys of wildlife are recommended.

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Short, J., and J. Hone. "Calibrating Aerial Surveys of Kangaroos by Comparison With Drive Counts." Wildlife Research 15, no. 3 (1988): 277. http://dx.doi.org/10.1071/wr9880277.

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Densities of red and western grey kangaroos and euros were assessed by aerial survey and compared with densities obtained in the same area by drive counts. The survey area (12.1 km2) was long, narrow and sparsely vegetated. Lakes and a kangaroo-proof fence bounded the area on three sides facilitating the drive count. Densities from aerial surveys ranged between 38 and 54% of the corresponding drive counts for red kangaroos, between 15 and 23% for western grey kangaroos, and between 9 and 10% for euros. The time of morning at which the surveys were conducted altered these percentages. About twice as many red and western grey kangaroos were counted on aerial surveys at sunrise compared to surveys 3.5 h later.

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Wickstead, Helen, and Martyn Barber. "A Spectacular History of Survey by Flying Machine!" Cambridge Archaeological Journal 22, no. 1 (February 2012): 71–88. http://dx.doi.org/10.1017/s0959774312000054.

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The origins of archaeological methods are often surprising, revealing unexpected connections between science, art and entertainment. This article explores aerial survey, a visual method commonly represented as distancing or objective. We show how aerial survey's visualizing practices embody subjective notions of vision emerging throughout the nineteenth century. Aerial survey smashes linear perspective, fragments time-space, and places radical doubt at the root of claims to truth. Its techniques involve hallucination, and its affinities are with stop-motion photography and cinema. Exposing the juvenile dementia of aerial survey's infancy releases practitioners and critics from the impulse to defend or demolish its ‘enlightenment’ credentials.

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Pople, A. R. "Frequency and precision of aerial surveys for kangaroo management." Wildlife Research 35, no. 4 (2008): 340. http://dx.doi.org/10.1071/wr07066.

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The appropriate frequency and precision for surveys of wildlife populations represent a trade-off between survey cost and the risk of making suboptimal management decisions because of poor survey data. The commercial harvest of kangaroos is primarily regulated through annual quotas set as proportions of absolute estimates of population size. Stochastic models were used to explore the effects of varying precision, survey frequency and harvest rate on the risk of quasiextinction for an arid-zone and a more mesic-zone kangaroo population. Quasiextinction probability increases in a sigmoidal fashion as survey frequency is reduced. The risk is greater in more arid regions and is highly sensitive to harvest rate. An appropriate management regime involves regular surveys in the major harvest areas where harvest rate can be set close to the maximum sustained yield. Outside these areas, survey frequency can be reduced in relatively mesic areas and reduced in arid regions when combined with lowered harvest rates. Relative to other factors, quasiextinction risk is only affected by survey precision (standard error/mean × 100) when it is >50%, partly reflecting the safety of the strategy of harvesting a proportion of a population estimate.

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Zhang, Ling, Zhiqing Wei, Lin Wang, Xin Yuan, Huici Wu, and Wenyan Xu. "Spectrum Sharing in the Sky and Space: A Survey." Sensors 23, no. 1 (December 29, 2022): 342. http://dx.doi.org/10.3390/s23010342.

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In order to achieve the vision of seamless wireless communication coverage, a space–air–ground integrated network is proposed as a key component of the sixth-generation (6G) mobile communication system. However, the spectrum used by aerial networks has become gradually crowded with the increase in wireless devices. Space networks are also in dire need of developing new bands to address spectrum shortages. As an effective way to solve the spectrum shortage problem, spectrum sharing between aerial/space networks and ground networks has been extensively studied. This article summarizes state-of-the-art studies on spectrum sharing between aerial/space networks and ground networks. First, this article provides an overview of aerial networks and space networks and introduces the main application scenarios of aerial networks and space networks. Then, this article summarizes the spectrum sharing techniques between aerial/space networks and ground networks, including existing spectrum utilization rules, spectrum sharing modes and key technologies. Finally, we summarize the challenges of spectrum sharing between aerial/space networks and ground networks. This article provides guidance for spectrum allocation and spectrum sharing of space–air–ground integrated networks.

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Mantey, S. "Suitability of Unmanned Aerial Vehicles for Cadastral Surveys." Ghana Mining Journal 19, no. 1 (June 30, 2019): 1–8. http://dx.doi.org/10.4314/gm.v19i1.1.

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Cadastral surveys in Ghana often employ well known surveying equipment such as Total Station andGNSSreceivers or a combination of both. These survey techniques are well-established and widely accepted. However, there are limitations in certain areas. In situations where difficult terrain and inaccessible areas and dense vegetation are encountered or when surveyor’s life may be at risk, Unmanned Aerial Vehicles (UAVs) could be used to overcome the limitations of these well-established survey instruments. This research used high resolution images from UAV (DJI Phantom 4) to survey plots within the University of Mines and Technology land area. Coordinates of the boundary points were extracted using Agisoft Photoscan.GNSSreceivers were also used to survey the land and the same boundary point coordinates obtained and compared. This enabled the establishment of accurate ground control points for georeferencing. The coordinates obtained from both UAV andGNSSSurveys were used to prepare cadastral plans and compared. The difference in Northings and Eastings from UAV andGNSSsurveys were +0.380 cmand +0.351 cmrespectively. These differences are well within tolerance of +/-0.9114 m(+/-3 ft) set by the Survey and Mapping Division (SMD) of the Lands Commission for cadastral plans production. This research therefore concludes that high resolution images from UAVs are suitable for cadastral surveying. Keywords: Unmanned Aerial Vehicles, Drones, Global Navigation Satellite Systems, Cadastral Surveys

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Colefax, Andrew P., Paul A. Butcher, and Brendan P. Kelaher. "The potential for unmanned aerial vehicles (UAVs) to conduct marine fauna surveys in place of manned aircraft." ICES Journal of Marine Science 75, no. 1 (June 7, 2017): 1–8. http://dx.doi.org/10.1093/icesjms/fsx100.

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Abstract Unmanned aerial vehicles (UAVs) are increasingly used in marine wildlife research. As technological developments rapidly advance the versatility and functionality of affordable UAVs, their potential as a marine aerial survey tool is quickly gaining attention. Currently, there is significant interest in whether cost-effective UAVs can outperform manned aircraft in aerial surveys of marine fauna at sea, although few empirical studies have compared relative sampling efficiency, accuracy and precision. Civil aviation restrictions, and subsequent available civilian technologies, make it unlikely that UAVs will currently be more effective than manned aircraft for large area marine surveys. UAVs do, however, have the capacity to fill a niche for intensive smaller spatial scale sampling and for undertaking aerial surveys in isolated locations. Improvements in UAV sensor resolutions and alternative sensor types, such as multispectral cameras, may increase area coverage, reduce perception error, and increase water penetration for sightability. Additionally, the further development of auto-detection software will rapidly improve image processing and further reduce human observer error inherent in manned aerial surveys. As UAV technologies and associated methodology is further developed and becomes more affordable, these aircraft will be increasingly adopted as a marine aerial survey tool in place of traditional methods using manned aircraft.

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Shah, Kunal, Grant Ballard, Annie Schmidt, and Mac Schwager. "Multidrone aerial surveys of penguin colonies in Antarctica." Science Robotics 5, no. 47 (October 28, 2020): eabc3000. http://dx.doi.org/10.1126/scirobotics.abc3000.

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Speed is essential in wildlife surveys due to the dynamic movement of animals throughout their environment and potentially extreme changes in weather. In this work, we present a multirobot path-planning method for conducting aerial surveys over large areas designed to make the best use of limited flight time. Unlike current survey path-planning solutions based on geometric patterns or integer programs, we solve a series of satisfiability modulo theory instances of increasing complexity. Each instance yields a set of feasible paths at each iteration and recovers the set of shortest paths after sufficient time. We implemented our planning algorithm with a team of drones to conduct multiple photographic aerial wildlife surveys of Cape Crozier, one of the largest Adélie penguin colonies in the world containing more than 300,000 nesting pairs. Over 2 square kilometers was surveyed in about 3 hours. In contrast, previous human-piloted single-drone surveys of the same colony required over 2 days to complete. Our method reduces survey time by limiting redundant travel while also allowing for safe recall of the drones at any time during the survey. Our approach can be applied to other domains, such as wildfire surveys in high-risk weather conditions or disaster response.

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Kurkov, V. M., and A. S. Kiseleva. "DEM ACCURACY RESEARCH BASED ON UNMANNED AERIAL SURVEY DATA." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B3-2020 (August 22, 2020): 1347–52. http://dx.doi.org/10.5194/isprs-archives-xliii-b3-2020-1347-2020.

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Abstract. Currently, digital elevation models (DEM) created by photogrammetric method based on unmanned aerial survey data are becoming an increasingly popular product. They are used in various areas of human activity related to modelling and analysis of terrain, namely: topography, engineering and geodetic surveys, surveying, archaeology, geomorphology, etc. The accuracy of digital surface and terrain models obtained by the photogrammetric method depends on the accuracy of aerial triangulation and dense point cloud from a number of overlapping images. In turn, the accuracy of the aerial triangulation is determined by the accuracy of the measurements of the tie points, GCP's / check points and the intersection geometry. When constructing a dense cloud using the SGM algorithm, the quality of the surface/terrain model depends not only on the accuracy of point identification, but also on filtering outliers and rejecting unreliable measurements. This article presents the results of evaluating the accuracy of creating a digital elevation model obtained by various unmanned aerial survey systems on a single test area.

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Lethbridge, Mark, Michael Stead, and Cameron Wells. "Estimating kangaroo density by aerial survey: a comparison of thermal cameras with human observers." Wildlife Research 46, no. 8 (2019): 639. http://dx.doi.org/10.1071/wr18122.

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Abstract ContextAerial surveys provide valuable information about the population status and distribution of many native and pest vertebrate species. They are vital for evidence-based monitoring, budget planning and setting management targets. Despite aircraft running costs, they remain one of the most cost-effective ways to capture distribution and abundance data over a broad area. In Australia, annual surveys of large macropods are undertaken in several states to inform management, and in some jurisdictions, to help set commercial kangaroo harvest quotas. Improvements in the cost efficiencies of these surveys are continually sought. Aerial thermal imaging techniques are increasingly being tested for wildlife surveys, but to date no studies have directly compared population data derived from thermal imaging with data collected by human observers during the same flight. AimsDuring an aerial survey of western grey kangaroos (Macropus fuliginosus), eastern grey kangaroos (M. giganteus) and red kangaroos (Osphranter rufus) across the state of Victoria, Australia, the objective was to conduct a direct comparison of the effectiveness of thermal camera technology and human observers for estimating kangaroo populations from aerial surveys. MethodsA thermal camera was mounted alongside an aerial observer on one side of the aircraft for a total of 1360km of transect lines. All thermal footage was reviewed manually. Population density estimates and distance sampling models were compared with human observer counts. Key resultsOverall, the kangaroo density estimates obtained from the thermal camera data were around 30% higher than estimates derived from aerial observer counts. This difference was greater in wooded habitats. Conversely, human-derived counts were greater in open habitats, possibly due to interference from sunlight and flushing. It was not possible to distinguish between species of macropod in the thermal imagery. ConclusionsThermal survey techniques require refining, but the results of the present study suggest that with careful selection of time of day for surveys, more accurate population estimates may be possible than with conventional aerial surveys. ImplicationsConventional aerial surveys may be underestimating animal populations in some habitats. Further studies that directly compare the performance of aerial observers and thermal imaging are required across a range of species and habitats.

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Broome, LS. "Sightability as a Factor in Aerial Survey of Bird Species and Communities." Wildlife Research 12, no. 1 (1985): 57. http://dx.doi.org/10.1071/wr9850057.

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Experimental aerial and ground censuses of waterbirds were conducted on three small, isolated bodies of water on the New England tablelands of New South Wales. The flying height at which sightability was optimized for the most common species was 30 m. Aerial and ground counts were significantly correlated for most species on the three watar bodies. Black swan, swamphen, coots, musk ducks and maned ducks were counted in equivalent or greater numbers from the air than from the ground on at least one water body. Other species were counted in lower numbers from the air than from the ground. A fairly high precision in the aerial-ground relationship for the most abundant species indicates that aerial survey can be a useful procedure for obtaining indices or estimates of the population sizes of these species. However, differences in sightability between species and between types of water body indicate that indices should be used and interpreted with caution. Other bird species from a variety of habitat types which are also amenable to aerial survey are discussed, and some recommendations for aerial surveys of birds are provided.

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Summers, G. D. "An aerial Survey of Çevre Kale, Yaraşli." Anatolian Studies 42 (December 1992): 179–206. http://dx.doi.org/10.2307/3642957.

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About 1 km. north of the village of Yaraşlı on a natural hill that forms an extension of Karaca Daǧ, is a large and impressively defended site locally called Çevre Kale (Fig. 1). Pottery from the surface is Imperial Hittite and Phrygian in date. There is later material, Hellenistic to Byzantine, beneath and adjacent to the village. Yaraşlı is a large well watered village in the Kulu district (ilce) of Konya province (il). The map reference is 59-Ie on the 1:200,000 sheet for Katrancı (Harita Genel Müdürlüǧü 1945).The aims of the project were to produce a photographic record of the site from the air, using a helium filled blimp and remote controlled camera, from which plans could be drawn and relationships between the various elements of the site determined. Air photographs revealed outlines of buildings that could not be seen on the ground (Pls XLI–XLV(a)). An overall plan has been drawn (Fig. 3). In some cases it has been possible to draw stone for stone plans (Fig. 5 and Pl. XLIV(b), Fig. 6 and Pl. XLV(a)). The results are much superior to those that could have been achieved by traditional cadastral survey and were obtained in a short time. During the course of the day photographs can be taken in varying light so that changes in shadow highlight different features.

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FUJITA, Ichiro, Tsuyoshi NAKATANI, and Kazuhiro YAMAMOTO. "Appearance of city by Aerial-Laser-Survey." Journal of the Visualization Society of Japan 26, Supplement2 (2006): 187–88. http://dx.doi.org/10.3154/jvs.26.supplement2_187.

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Aber, James S., and Susan W. Aber. "Applications of kite aerial photography: Property survey." Transactions of the Kansas Academy of Science 106, no. 1 & 2 (April 2003): 107–10. http://dx.doi.org/10.1660/0022-8443(2003)106[0107:aokapp]2.0.co;2.

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del Cerro, Jaime, Christyan Cruz Ulloa, Antonio Barrientos, and Jorge de León Rivas. "Unmanned Aerial Vehicles in Agriculture: A Survey." Agronomy 11, no. 2 (January 21, 2021): 203. http://dx.doi.org/10.3390/agronomy11020203.

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The number of tasks that nowadays are accomplished by using unmanned aerial vehicles is rising across many civil applications, including agriculture. Thus, this work aims at providing the reader with an overview of the agronomical use of unmanned aerial vehicles. The work starts with a historical analysis of the use of aircrafts in agriculture, as pioneers of their use in modern precision agriculture techniques, currently applied by a high number of users. This survey has been carried out by providing a classification of the vehicles according to their typology and main sensorial and performance features. An extensive review of the most common applications and the advantages of using unmanned aerial vehicles is the core of the work. Finally, a brief summary of the key points of the legislation applicable to civil drones that could affect to agricultural applications is analyzed.

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NAGAOKA, Toshi, and Shigeru MORIUCHI. "Aerial radiological survey and assessment system ARSAS." Japanese Journal of Health Physics 25, no. 4 (1990): 391–98. http://dx.doi.org/10.5453/jhps.25.391.

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Smart, A. T. "Manual of Aerial Survey: Primary Data Acquisition." Photogrammetric Record 18, no. 102 (June 2003): 181–82. http://dx.doi.org/10.1111/0031-868x.t01-1-00011_4.

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Junkermann, Wolfgang, Bernhard Vogel, and Max Bangert. "Ultrafine particles over Germany – an aerial survey." Tellus B: Chemical and Physical Meteorology 68, no. 1 (April 8, 2016): 29250. http://dx.doi.org/10.3402/tellusb.v68.29250.

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Williams, Gustavious Paul, Louis Martino, and John Wrobel. "Aerial Radiation Survey at a Military Range." Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management 5, no. 2 (April 2001): 66–77. http://dx.doi.org/10.1061/(asce)1090-025x(2001)5:2(66).

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Williams, J. "Review: Digital Aerial Survey: Theory and Practice." Forestry 77, no. 2 (February 1, 2004): 173–74. http://dx.doi.org/10.1093/forestry/77.2.173-a.

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Cole, Daniel G. "Manual of Aerial Survey: Primary Data Acquisition." Cartographic Perspectives, no. 49 (September 1, 2004): 74–75. http://dx.doi.org/10.14714/cp49.443.

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Mount, Richard. "Acquisition of Through-water Aerial Survey Images." Photogrammetric Engineering & Remote Sensing 71, no. 12 (December 1, 2005): 1407–15. http://dx.doi.org/10.14358/pers.71.12.1407.

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Saeed, Adnan S., Ahmad Bani Younes, Chenxiao Cai, and Guowei Cai. "A survey of hybrid Unmanned Aerial Vehicles." Progress in Aerospace Sciences 98 (April 2018): 91–105. http://dx.doi.org/10.1016/j.paerosci.2018.03.007.

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Tahir, Anam, Jari Böling, Mohammad-Hashem Haghbayan, Hannu T. Toivonen, and Juha Plosila. "Swarms of Unmanned Aerial Vehicles — A Survey." Journal of Industrial Information Integration 16 (December 2019): 100106. http://dx.doi.org/10.1016/j.jii.2019.100106.

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Florinsky, Igor. "Unmanned aerial survey in the summer season of the 67th Russian antarctic expedition." InterCarto. InterGIS 28, no. 1 (2022): 284–304. http://dx.doi.org/10.35595/2414-9179-2022-1-28-284-304.

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The use of unmanned aerial systems (UAS) in glaciology and cryology, as well as studying and monitoring of polar regions is one of the most rapidly developing areas of the unmanned aerial industry. An aerial photogeodetic team of the 67th Russian Antarctic Expedition (RAE) solved two main interrelated tasks: 1) field tests of the newest Russian UAS Geoscan 701 in Antarctic conditions and 2) carrying out unmanned aerial surveys of two Antarctic territories, characterized by fundamentally different natural conditions, in order to obtain their high-precision orthomosaics and digital elevation models (DEMs) of an ultra-high resolution. On 15 January 2022, we carried out an unmanned aerial survey of two adjacent Antarctic maritime oases Molodezhny and Vecherny and surrounding areas of the glacier (Enderby Land, East Antarctica). From 26 January to 16 February 2022, we performed an unmanned aerial survey of the Fildes Peninsula (the southwestern, free of ice cover portion of the King George Island, South Shetland Islands, West Antarctica). The survey was complicated by severe meteorological conditions (low clouds, fog, strong winds, and precipitation). Field tests of UAS Geoscan 701 have shown that the system can be successfully used for unmanned aerial survey in polar regions. After in-office photogrammetric processing of the obtained materials, orthomosaics and DEMs of the indicated territories will be obtained with a resolution of 10 and 25 cm, respectively. These will be used for creation of modern large-scale topographic maps, photographic maps, three-dimensional and geomorphometric modeling of these territories, as well as operational and scientific activities of the RAE.

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Yamamoto, Hajime. "Aerial Surveys and Geographic Information in Modern China." Abstracts of the ICA 1 (July 15, 2019): 1–2. http://dx.doi.org/10.5194/ica-abs-1-414-2019.

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Abstract. Today when online satellite images are just a click away, access to geographic information showing the latest images of the globe has dramatically expanded, and historico-geographic research based on such information is flourishing. However, in the study of Chinese history, historical research employing GIS or similar technologies is still in its infancy, since “historical” geographic information with a high degree of precision are lacking. From within the ambit of Chinese geographic information, this report specifically highlights aerial surveys effected during the Republic of China era. To start, we review the history of domestic aerial surveys during R. O. C. period. Then, focusing on Nanjing as an example, we proceed to introduce maps that were actually created based on aerial surveys.Chinese aerial surveys date back to around 1930. At the Nationalist Party’s General Assembly in 1929, partisans proposed for the need for aerial surveys. In 1930, the “Aerial Photography and Survey Research Team” was formed within the General Land Survey Department at General Staff Headquarters (National Army of the Republic of China). Consequently, foreign technicians were invited to provide relevant education/training. In June 1931, China’s pioneer initiative in aerial photography took place in Zhejiang province. The aim of aerial surveys in those early days was to create maps for military purposes. Between 1932 and 1939, topographic maps of fortifications located in areas such as the Jiangnan district were prepared. Further, starting from around the same period until the Sino-Japanese War, land registry maps based on aerial surveys were also produced. After the Sino-Japanese War ended, the above-mentioned directorate handed over responsibility for aerial surveys to the Naval General Staff. However, in 1949 the Chinese Communist Party confiscated the maps theretofore produced.Although the aerial photographs and the geographic information produced therefrom during the R. O. C. era were seized by the People’s Republic of China, in actuality, some had previously been transferred to Taiwan. The topographic maps of the Nanjing metropolitan area (一萬分一南京城廂附近圖), based on aerial surveys and drawn in 1932, are currently archived at Academia Historica in Taipei. Comprising a total of 16 sheets, these maps were drawn on a scale of 1:10,000 by the General Land Survey Department.Similarly, other maps (各省分幅地形圖) produced by the General Land Survey Department, comprising a total of 56 sheets and partly detailing Nanjing, are now in the possession of Academia Sinica in Taipei. There was no information about photographing or making in these maps. But almost the same maps were archived at Library of Congress in Washington D. C. According to those maps at LC, based on aerial photographs taken and surveys conducted in 1933, these topographic maps (1:10,000 scale) were completed in 1936.The examples introduced above are topographic maps based on aerial photography. However, starting in 1937, land registry maps were also created. Detailing the outskirts of Nanjing (1:1,000 scale) and comprising a total of 121 sheets, they are now archived at Academia Historica. While the land registry maps were produced in 1937, supplementary surveys were effected following the Sino-Japanese War in 1947.Since the geographic information based on aerial surveys during the R. O. C. era in China were precise, they can serve as a source of manifold information. This report only delved into information developed by the Government of the R. O. C., but it is becoming evident that U. S. Armed Forces and Japan also produced geographic information of their own based on aerial surveys. If the comprehensive panorama captured by all three protagonists can be illuminated, further advances in Chinese historico-geographic studies employing geographic information will be forthcoming.

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Du, Wenjia, Fengchen Chen, Ke Tang, Lan Cheng, and Huanjing Jiao. "Research on rapid mapping technology in the field of unmanned aerial vehicle (UAV) aerial survey." E3S Web of Conferences 131 (2019): 01065. http://dx.doi.org/10.1051/e3sconf/201913101065.

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Through the development of computer image processing technology and UAV technology, after installing high-definition cameras on UAVs and taking high-resolution images, the technology of directly generating DOM images in the surveyed areas using software has been well-developed. However, under the emergency conditions such as dealing with disasters, the long-term processing time required for aerial surveys of UAVs has become a major efficiency constraint to surveying and mapping. This paper focuses on the rapid mapping and mosaicking of survey images from unmanned aerial vehicles under emergency conditions, and elaborates current research status, difficulties and resolvents of the rapid mapping of existing UAVs.

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Shah, Kunal, Annie Schmidt, Grant Ballard, and Mac Schwager. "Large Scale Aerial Multi-Robot Coverage Path Planning." Field Robotics 2, no. 1 (March 10, 2022): 1971–98. http://dx.doi.org/10.55417/fr.2022064.

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Autonomous survey and aerial photogrammetry applications require solving a path planning problem that ensures sensor coverage over a specified area. In this work, we provide a multi-robot path planning method that can obtain this coverage over an arbitrary area of interest. We extend our previous method, path optimization for population counting with overhead robotic networks (POPCORN), by a divide-and-conquer scheme, split and link tiles (SALT), which drastically decreases the time needed for route planning. These POPCORN instances can be computed in parallel and combined with SALT in a scalable manner to produce coverage paths over very large areas of interest. To demonstrate this algorithm’s capabilities, we implemented our planning algorithm with a team of drones to conduct multiple photographic aerial wildlife surveys of the Cape Crozier Adélie penguin rookery on Ross Island, Antarctica, one of the largest Adélie penguin colonies in the world. The colony, which contains over 300,000 nesting pairs and spans over 2 km, was surveyed in about 3 hours. In contrast, previous human-piloted single-drone surveys of the same colony required over 2 days to complete. We also have deployed our survey system at several islets at Mono Lake, California, to survey a California gull colony as well as at a 2000-acre ranch in Marin, California. We provide this survey path planning tool as an open-source software package named wadl.

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Journal articles on the topic 'Aerial survey'

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