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Journal articles on the topic 'Ground-based'

To see the other types of publications on this topic, follow the link: Ground-based.

Author: Grafiati

Published: 4 June 2021

Last updated: 31 January 2023

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1

Manchandani, Hanshul. "Space based solar power versus ground based solar power." International Journal of Research and Engineering 4, no. 11 (December 13, 2017): 260–62. http://dx.doi.org/10.21276/ijre.2017.4.11.1.

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2

Pilipenko, Vyacheslav. "Space weather impact on ground-based technological systems." Solar-Terrestrial Physics 7, no. 3 (September 28, 2021): 68–104. http://dx.doi.org/10.12737/stp-73202106.

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This review, offered for the first time in the Russian scientific literature, is devoted to various aspects of the problem of the space weather impact on ground-based technological systems. Particular attention is paid to hazards to operation of power transmission lines, railway automation, and pipelines caused by geomagnetically induced currents (GIC) during geomagnetic disturbances. The review provides information on the main characteristics of geomagnetic field variability, on rapid field variations during various space weather mani-festations. The fundamentals of modeling geoelectric field disturbances based on magnetotelluric sounding algorithms are presented. The approaches to the assessment of possible extreme values of GIC are considered. Information about economic effects of space weather and GIC is collected. The current state and prospects of space weather forecasting, risk assessment for technological systems from GIC impact are discussed. While in space geophysics various models for predicting the intensity of magnetic storms and their related geomagnetic disturbances from observations of the interplanetary medium are being actively developed, these models cannot be directly used to predict the intensity and position of GIC since the description of the geomagnetic field variability requires the development of additional models. Revealing the fine structure of fast geomagnetic variations during storms and substorms and their induced GIC bursts appeared to be important not only from a practical point of view, but also for the development of fundamentals of near-Earth space dynamics. Unlike highly specialized papers on geophysical aspects of geomagnetic variations and engineering aspects of the GIC impact on operation of industrial transformers, the review is designed for a wider scientific and technical audience without sacrificing the scientific level of presentation. In other words, the geophysical part of the review is written for engineers, and the engineering part is written for geophysicists. Despite the evident applied orientation of the studies under consideration, they are not limited to purely engineering application of space geophysics results to the calculation of possible risks for technological systems, but also pose a number of fundamental scientific problems

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3

Shao, Michael. "Ground-based interferometry." Astrophysics and Space Science 241, no. 1 (March 1996): 105–10. http://dx.doi.org/10.1007/bf00644219.

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4

Martin, Lorenz, Marc Schneebeli, and Christian Mätzler. "ASMUWARA, a ground-based radiometer system for tropospheric monitoring." Meteorologische Zeitschrift 15, no. 1 (February 27, 2006): 11–17. http://dx.doi.org/10.1127/0941-2948/2006/0092.

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5

Uchiyama, A., S. Asano, M. Shiobara, and M. Fukabori. "Ground-Based Cirrus Observation." Journal of the Meteorological Society of Japan. Ser. II 77, no. 2 (1999): 513–32. http://dx.doi.org/10.2151/jmsj1965.77.2_513.

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6

Uchiyama, A., and M. Fukabori. "Ground-Based Cirrus Observation." Journal of the Meteorological Society of Japan. Ser. II 77, no. 2 (1999): 533–52. http://dx.doi.org/10.2151/jmsj1965.77.2_533.

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7

Russell, C. T., P. J. Chi, D. J. Dearborn, Y. S. Ge, B. Kuo-Tiong, J. D. Means, D. R. Pierce, K. M. Rowe, and R. C. Snare. "THEMIS Ground-Based Magnetometers." Space Science Reviews 141, no. 1-4 (March 22, 2008): 389–412. http://dx.doi.org/10.1007/s11214-008-9337-0.

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8

Hill, Frank, and John Leibacher. "Ground-based helioseismology networks." Advances in Space Research 11, no. 4 (January 1991): 149–58. http://dx.doi.org/10.1016/0273-1177(91)90450-x.

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9

Hutter, Donald. "Ground-based optical interferometry." Scholarpedia 7, no. 6 (2012): 10586. http://dx.doi.org/10.4249/scholarpedia.10586.

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10

Quirrenbach, Andreas. "Ground-based infrared interferometry." Advances in Space Research 34, no. 3 (January 2004): 524–27. http://dx.doi.org/10.1016/j.asr.2003.05.027.

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11

Solgi, A., and A. Najafi. "The impacts of ground-based logging equipment on forest soil." Journal of Forest Science 60, No. 1 (January 30, 2014): 28–34. http://dx.doi.org/10.17221/76/2013-jfs.

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Soil properties can be affected by heavy equipment used for skidding but these impacts vary greatly with site conditions and operational practices. We assessed the effects of ground-based skidding on site disturbance and soil physical properties. We also tested the effects of skid trail slope and traffic frequency on soil compaction, total porosity, and moisture content. On average, about 30% of all harvested area was disturbed to varying levels. Intact forest floor (undisturbed) and light slash were the dominant surface conditions, covering an average of 68.9% of harvested area. Deep disturbed soils accounted for only just over 1.1% of observations. Results showed that dry bulk density, total porosity and moisture content were affected considerably on skid trails by traffic frequency and skid trail slope. Measurements of soil properties in the surface layer (0–10 cm) showed that bulk density is 57% higher and total porosity is 31% lower on the skid trail compared to the undisturbed area. Average moisture content has been measured as 35% on the skid trail versus 47% in the undisturbed area.  

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12

Xiaofeng Li, Xiaofeng Li, Jun Xu Jun Xu, Jijun Luo Jijun Luo, Lijia Cao Lijia Cao, and Shengxiu Zhang Shengxiu Zhang. "Ground target recognition based on imaging LADAR point cloud data." Chinese Optics Letters 10, s1 (2012): S11002–311005. http://dx.doi.org/10.3788/col201210.s11002.

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13

Shixue Zhang, Shixue Zhang, Jinyu Zhao Jinyu Zhao, and Jianli Wang Jianli Wang. "High resolution astronomical image restoration system for large ground-based telescope." Chinese Optics Letters 10, s2 (2012): S21004–321007. http://dx.doi.org/10.3788/col201210.s21004.

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14

Дашкевич, Жанна, Zhanna Dashkevich, Владимир Иванов, and Vladimir Ivanov. "Estimated nitric oxide density in auroras from ground-based photometric data." Solar-Terrestrial Physics 5, no. 1 (March 22, 2019): 58–61. http://dx.doi.org/10.12737/stp-51201908.

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In this paper, we numerically estimate the nitric oxide density in auroras, using photometric data on 427.8, 557.7, and 630.0 nm emission intensities. The data were obtained at midnight at observatories of the Polar Geophysical Institute. These estimates were made using a numerical modeling procedure with a time-dependent model of the auroral ionosphere [Dashkevich et al., 2017]. It is shown that the NO density in the maximum of the altitude profile is between (1÷3.3)∙10^8 cm–3. The obtained estimates indicate the absence of a correlation between the [NO]max values and 427.8 nm emission intensities.

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15

Sterken, C. "Discussion on ground-based asteroseismology." Communications in Asteroseismology 150 (2007): 323–25. http://dx.doi.org/10.1553/cia150s323.

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16

Kepler, S. O. "Session1A: DATA − Ground-based observations." Communications in Asteroseismology 157 (2009): 23–62. http://dx.doi.org/10.1553/cia157s23.

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17

BAŞAK, Salih, Seçil ULUFER, Muharrem YILMAZ, Satılmış URGUN, and Cahit BİLGİ. "GROUND BASED AUGMENTATION SYSTEM (GBAS)." Istanbul Aydın Universitesi Dergisi 11, no. 2 (2019): 205–15. http://dx.doi.org/10.17932/iau.iaud.m.13091352.2019.2/42.205-215.

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18

Matson, Dennis L., Torrence V. Johnson, Diana L. Blaney, and Glenn J. Veeder. "Ground-based observations of Io." Reviews of Geophysics 33 (1995): 505. http://dx.doi.org/10.1029/95rg00352.

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19

Boden, A., and A. Quirrenbach. "Astrometry with ground-based interferometers." Proceedings of the International Astronomical Union 3, S248 (October 2007): 36–43. http://dx.doi.org/10.1017/s1743921308018590.

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AbstractWe review the status of ground-based interferometric astrometry. This will include a review of technology and results in differential techniques (e.g. relative orbit determination), as well as global astrometry techniques (globally-registered parallax and proper-motion estimates).

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20

Cogan, Peter, Michael K. Daniel, David J. Fegan, Stephen Gammell, Andrew McCann, and John Quinn. "Ground Based Gamma-Ray Astronomy." Proceedings of the International Astronomical Union 1, S230 (August 2005): 103–4. http://dx.doi.org/10.1017/s1743921306008003.

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21

Kuroda, Kazuaki. "Ground-based gravitational-wave detectors." International Journal of Modern Physics D 24, no. 14 (December 2015): 1530032. http://dx.doi.org/10.1142/s0218271815300323.

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Gravitational wave is predicted by Einstein’s general relativity, which conveys the information of source objects in the universe. The detection of the gravitational wave is the direct test of the theory and will be used as new tool to investigate dynamical nature of the universe. However, the effect of the gravitational wave is too tiny to be easily detected. From the first attempt utilizing resonant antenna in the 1960s, efforts of improving antenna sensitivity were continued by applying cryogenic techniques until approaching the quantum limit of sensitivity. However, by the year 2000, resonant antenna had given the way to interferometers. Large projects involving interferometers started in the 1990s, and achieved successful operations by 2010 with an accumulated extensive number of technical inventions and improvements. In this memorial year 2015, we enter the new phase of gravitational-wave detection by the forthcoming operation of the second-generation interferometers. The main focus in this paper is on how advanced techniques have been developed step by step according to scaling the arm length of the interferometer up and the history of fighting against technical noise, thermal noise, and quantum noise is presented along with the current projects, LIGO, Virgo, GEO-HF and KAGRA.

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22

M. L. Stone and G. A. Kranzler. "Image-based Ground Velocity Measurement." Transactions of the ASAE 35, no. 5 (1992): 1729–35. http://dx.doi.org/10.13031/2013.28791.

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23

Clay, R. W., and B. R. DawSOn. "Ground-based Gamma-ray Astronomy." Publications of the Astronomical Society of Australia 10, no. 3 (1993): 183–88. http://dx.doi.org/10.1017/s1323358000025637.

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AbstractGround-based gamma-ray astronomy has slowly developed over the past quarter of a century to a position now where a number of sources are known to produce gamma-rays in the energy range 1011eV to 1018eV. The observations are difficult, with exceptional signal to noise problems, but improved techniques are now allowing observers to proceed with confidence. In this paper the physical bases of the observations are emphasised to show the important issues in the field and the present state of the observations is indicated.

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24

Frandsen, S. "Asteroseismology: ground based observational methods." Symposium - International Astronomical Union 181 (1997): 331–44. http://dx.doi.org/10.1017/s0074180900061258.

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The improvement in observational techniques to study pulsations in solarlike stars is discussed. For higher mass stars the problem is to allocate specific eigenmodes to a set of observed frequencies. Additional observables can be used to sort out the present ambiguities.

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25

Holder, Jamie. "Ground-Based Gamma Ray Astronomy." Brazilian Journal of Physics 44, no. 5 (August 7, 2014): 450–64. http://dx.doi.org/10.1007/s13538-014-0245-3.

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26

BILAND, ADRIAN. "GROUND-BASED GAMMA-RAY ASTRONOMY." International Journal of Modern Physics A 20, no. 29 (November 20, 2005): 6981–90. http://dx.doi.org/10.1142/s0217751x05030661.

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Very High Energy Gamma-Ray Astronomy (the measurement of γ above 10 GeV) is a rather young but fast evolving field. In the past 16 years some 20 sources have been discovered, about half of them are firmly established and seen with high significance by more than one experiment. This rather short list already contains very different objects like plerions, supernova remnants and active galactic nuclei. A new generation of instruments (CANGAROO III, HESS, MAGIC, VERITAS) is just starting to take data, and first preliminary results show that the sensitivity is improved by at least a factor of 100. Already during commissioning, some new sources have been discovered. This overview will summarize the techniques used in VHE gamma-ray observations as well discuss briefly some physics topics that can be investigated in this energy range.

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27

Hillas, A. M. "Ground-based gamma-ray astronomy." Il Nuovo Cimento C 19, no. 5 (September 1996): 701–12. http://dx.doi.org/10.1007/bf02506663.

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28

Singh, Maneesha, and Matt Glennen. "Automated ground-based cloud recognition." Pattern Analysis and Applications 8, no. 3 (October 7, 2005): 258–71. http://dx.doi.org/10.1007/s10044-005-0007-5.

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29

Wetzig, J., K. Hofstetter-Degen, R. J. von Baumgarten, and S. Watanabe. "Ground based eccentric chair experiments." Acta Astronautica 33 (July 1994): 27–36. http://dx.doi.org/10.1016/0094-5765(94)90105-8.

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30

Atkinson, P. M., R. Webster, and P. J. Curran. "Cokriging with ground-based radiometry." Remote Sensing of Environment 41, no. 1 (July 1992): 45–60. http://dx.doi.org/10.1016/0034-4257(92)90060-w.

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31

Cander, Ljiljana R. "Ionospheric Ground-based Measurement Networks." Earth, Moon, and Planets 104, no. 1-4 (January 16, 2009): 37–40. http://dx.doi.org/10.1007/s11038-008-9245-z.

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32

Spann, James, and Thomas Moore. "Introduction: Photons and ground‐based." Journal of Geophysical Research: Space Physics 122, no. 2 (February 2017): 1437–38. http://dx.doi.org/10.1002/2017ja023888.

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33

Shaoyong Deng, Shaoyong Deng, Shiqiang Zhang Shiqiang Zhang, Yanhong Sun Yanhong Sun, and Xiaowei Guan Xiaowei Guan. "Influence of dynamic parameters on interacting efficiency between ground-based laser and air-based flying target." Chinese Optics Letters 12, s2 (2014): S20101–320107. http://dx.doi.org/10.3788/col201412.s20101.

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34

Xie, Hongtu, Shaoying Shi, Junfa Mao, Daoxiang An, and Fuhai Li. "Vehicle Experiment of Low Frequency UWB Bistatic SAR with Ground-Based Receiver." International Journal of Signal Processing Systems 5, no. 4 (December 2017): 136–40. http://dx.doi.org/10.18178/ijsps.5.4.136-140.

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35

van Lammeren, André, Arnoud Feijt, Joop Konings, Erik van Meijgaard, and Aad van Ulden. "Combination of ground-based and satellite cloud observations on a routine basis." Meteorologische Zeitschrift 9, no. 2 (July 14, 2000): 125–34. http://dx.doi.org/10.1127/metz/9/2000/125.

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36

Cimini, Domenico, Tim J. Hewison, and Lorenz Martin. "Comparison of brightness temperatures observed from ground-based microwave radiometers during TUC." Meteorologische Zeitschrift 15, no. 1 (February 27, 2006): 19–25. http://dx.doi.org/10.1127/0941-2948/2006/0096.

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37

Cimini, Domenico, Tim J. Hewison, Lorenz Martin, Jürgen Güldner, Catherine Gaffard, and Frank S. Marzano. "Temperature and humidity profile retrievals from ground-based microwave radiometers during TUC." Meteorologische Zeitschrift 15, no. 1 (February 27, 2006): 45–56. http://dx.doi.org/10.1127/0941-2948/2006/0099.

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38

Cermak, Jan, Marc Schneebeli, Daniela Nowak, Laurent Vuilleumier, and Jörg Bendix. "Characterization of low clouds with satellite and ground-based remote sensing systems." Meteorologische Zeitschrift 15, no. 1 (February 27, 2006): 65–72. http://dx.doi.org/10.1127/0941-2948/2006/0100.

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39

Zhang, Zhizheng, Jing Feng, Jun Yan, Xiaolei Wang, and Xiaocun Shu. "Ground-Based Cloud Recognition Based on Dense_SIFT Features." Journal of New Media 1, no. 1 (2019): 1–9. http://dx.doi.org/10.32604/jnm.2019.05937.

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40

Akasofu, S. I., D. Weimer, T. Iijima, B. H. Ahn, and Y. Kamide. "Agreements between ground-based and satellite-based observations." Planetary and Space Science 38, no. 12 (December 1990): 1533–40. http://dx.doi.org/10.1016/0032-0633(90)90158-m.

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41

Booth, D. Terrance, Samuel E. Cox, Tim Meikle, and Hans R. Zuuring. "Ground-Cover Measurements: Assessing Correlation Among Aerial and Ground-Based Methods." Environmental Management 42, no. 6 (April 30, 2008): 1091–100. http://dx.doi.org/10.1007/s00267-008-9110-x.

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42

Jiang-Yi Qin, Jiang-Yi Qin, Kai Wang Jiang-Yi Qin, Xian-Bin Li Kai Wang, Yong Jiang Xian-Bin Li, and Yuan Zuo Yong Jiang. "A Dynamic and Reconfigurable Satellite-to-ground Communication System Research Based on LoRa Technology." 電腦學刊 32, no. 5 (October 2021): 161–70. http://dx.doi.org/10.53106/199115992021103205013.

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A dynamic and reconfigurable satellite-to-ground communication system research based on LoRa technology is proposed in this paper. Starting from the application background of the internet of things (IoT) on the low earth orbit (LEO) satellite, this paper proposes a modulation parameter dynamic and reconfigurable technology for the Long Range (LoRa) signal, so as to improve the reliability of the IoT used in the satellite-to-ground communication system. Then, a parameter reconstitution method is designed in detail according to the satellite-to-ground communication link budget, and this method has the advantages of low complexity and less resources. Meanwhile, in this communication system, a desired bit rate can be selected based on the parameter reconstitution method to support different application. Simulation results show that the dynamic and reconfigurable satellite-to-ground communication system can work as expected, and this research possesses a great guidance in making the space-based IoT.

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43

Hecht, Jeff. "Will Satellites Cripple Ground-Based Astronomy?" Optics and Photonics News 32, no. 5 (May 1, 2021): 26. http://dx.doi.org/10.1364/opn.32.5.000026.

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44

Schumann, U., R. Hempel, H. Flentje, M. Garhammer, K. Graf, S. Kox, H. Lösslein, and B. Mayer. "Contrail study with ground-based cameras." Atmospheric Measurement Techniques 6, no. 12 (December 20, 2013): 3597–612. http://dx.doi.org/10.5194/amt-6-3597-2013.

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Abstract. Photogrammetric methods and analysis results for contrails observed with wide-angle cameras are described. Four cameras of two different types (view angle < 90° or whole-sky imager) at the ground at various positions are used to track contrails and to derive their altitude, width, and horizontal speed. Camera models for both types are described to derive the observation angles for given image coordinates and their inverse. The models are calibrated with sightings of the Sun, the Moon and a few bright stars. The methods are applied and tested in a case study. Four persistent contrails crossing each other, together with a short-lived one, are observed with the cameras. Vertical and horizontal positions of the contrails are determined from the camera images to an accuracy of better than 230 m and horizontal speed to 0.2 m s−1. With this information, the aircraft causing the contrails are identified by comparison to traffic waypoint data. The observations are compared with synthetic camera pictures of contrails simulated with the contrail prediction model CoCiP, a Lagrangian model using air traffic movement data and numerical weather prediction (NWP) data as input. The results provide tests for the NWP and contrail models. The cameras show spreading and thickening contrails, suggesting ice-supersaturation in the ambient air. The ice-supersaturated layer is found thicker and more humid in this case than predicted by the NWP model used. The simulated and observed contrail positions agree up to differences caused by uncertain wind data. The contrail widths, which depend on wake vortex spreading, ambient shear and turbulence, were partly wider than simulated.

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45

Schumann, U., R. Hempel, H. Flentje, M. Garhammer, K. Graf, S. Kox, H. Lösslein, and B. Mayer. "Contrail study with ground-based cameras." Atmospheric Measurement Techniques Discussions 6, no. 4 (August 19, 2013): 7425–72. http://dx.doi.org/10.5194/amtd-6-7425-2013.

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Abstract. Photogrammetric methods and analysis results for contrails observed with wide-angle cameras are described. Four cameras of two different types (view angle < 90° or whole-sky imager) at the ground at various positions are used to track contrails and to derive their altitude, width, and horizontal speed. Camera models for both types are described to derive the observation angles for given image coordinates and their inverse. The models are calibrated with sightings of the Sun, the Moon and a few bright stars. The methods are applied and tested in a case study. Four persistent contrails crossing each other together with a short-lived one are observed with the cameras. Vertical and horizontal positions of the contrails are determined from the camera images to an accuracy of better than 200 m and horizontal speed to 0.2 m s−1. With this information, the aircraft causing the contrails are identified by comparison to traffic waypoint data. The observations are compared with synthetic camera pictures of contrails simulated with the contrail prediction model CoCiP, a Lagrangian model using air traffic movement data and numerical weather prediction (NWP) data as input. The results provide tests for the NWP and contrail models. The cameras show spreading and thickening contrails suggesting ice-supersaturation in the ambient air. The ice-supersaturated layer is found thicker and more humid in this case than predicted by the NWP model used. The simulated and observed contrail positions agree up to differences caused by uncertain wind data. The contrail widths, which depend on wake vortex spreading, ambient shear and turbulence, were partly wider than simulated.

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46

Kleymyonov, V. V., and E. V. Novikova. "Extremely large ground-based optical telescopes." Izvestiâ vysših učebnyh zavedenij. Priborostroenie 64, no. 1 (February 11, 2021): 5–20. http://dx.doi.org/10.17586/0021-3454-2021-64-1-5-20.

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47

Cowen, Ron. "Ground-Based Telescope Detects Star's Corona." Science News 160, no. 5 (August 4, 2001): 69. http://dx.doi.org/10.2307/4012683.

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48

Chandrasekaran, Kamali, Vijeesh Theningaledathil, and Archana Hebbar. "GROUND BASED VARIABLE STABILITY FLIGHT SIMULATOR." Aviation 25, no. 1 (April 7, 2021): 22–34. http://dx.doi.org/10.3846/aviation.2021.13564.

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This paper discusses the development of a ground based variable stability flight simulator. The simulator is designed to meet the pilot training requirements on flying qualities. Such a requirement arose from a premier Flight-Testing School of the Indian Air Force. The simulator also provides a platform for researchers and aerospace students to understand aircraft dynamics, conduct studies on aircraft configuration design, flight mechanics, guidance & control and to evaluate autonomous navigation algorithms. The aircraft model is built using open source data. The simulator is strengthened with optimization techniques to configure variable aircraft stability and control characteristics to fly and evaluate the various aspects of flying qualities. The methodology is evaluated through a series of engineer and pilot-in-the-loop simulations for varying aircraft stability conditions. The tasks chosen are the proven CAT A HUD tracking tasks. The simulator is also reconfigurable to host an augmented fighter aircraft that can be evaluated by the test pilot team for the functional integrity as a fly-through model.

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49

Lin, Dan, and Andrew Eng. "Ground Attenuation Factor Based on Measurements." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 3 (August 1, 2021): 3436–47. http://dx.doi.org/10.3397/in-2021-2405.

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Assumptions made on the ground types between sound sources and receivers can significantly impact the accuracy of environmental outdoor noise prediction. A guideline is provided in ISO 9613-2 and the value of ground factor ranges from 0 to 1, depending on the coverage of porous ground. For example, a ground absorption factor of 1 is suggested for grass ground covers. However, it is unclear if the suggested values are validated. The purpose of this study is to determine the sound absorption of different types of ground by measurements. Field noise measurements were made using an omnidirectional loudspeaker and two microphones on three different types of ground in a quiet neighborhood. One microphone was located 3ft from the loudspeaker to record near field sound levels in 1/3 and 1 octave bands every second. The other microphone was located a few hundred feet away to record far field sound in the same fashion as the near field microphone. The types of ground tested were concrete, grass, and grass with trees. Based on the measurement data, it was found that grass and trees absorb high frequency sound well and a ground factor of 1 may be used for 500Hz and up when using ISO 9613-2 methodology. However, at lower frequencies (125 Hz octave band and below), grassy ground reflects sound the same as concrete surfaces. Trees absorb more low frequency sound than grass, but less than ISO 9613-2 suggested.

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50

Zhou, X. Y., K. Fukui, H. C. Carlson, J. I. Moen, and R. J. Strangeway. "Shock aurora: Ground-based imager observations." Journal of Geophysical Research: Space Physics 114, A12 (December 2009): n/a. http://dx.doi.org/10.1029/2009ja014186.

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