Results 41 to 50 of about 458 (205)
Varaition of Local Time of Ascending Node Due to the Altitude Decay of Sun-Synchronous Satellite [PDF]
Journal of Astronomy and Space Sciences, 2006 Variation of the Local Time of Ascending Node (LTAN) has been analyzed according to initial inclinations when the altitude of Sun-synchronous satellite is continuously decreased due to the atmospheric drag.
Byoung-Sun Lee +5 more
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Efficient Super-Resolution Method for Targets Observed by Satellite SAR
Sensors, 2023 This study presents an efficient super-resolution (SR) method for targets observed by satellite synthetic aperture radar (SAR). First, a small target image is extracted from a large-scale SAR image and undergoes proper preprocessing.
Seung-Jae Lee, Sun-Gu Lee
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Precise orbit determination of LEO satellites : a systematic review [PDF]
, 2023 The need for precise orbit determination (POD) has grown significantly due to the increased amount of space-based activities taking place at an accelerating pace.
Bhuiyan, M. Zahidul H. +5 more
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Analysis of Collision Avoidance Maneuver Frequency for the KOMPSAT-2 and the KOMPSAT-5 [PDF]
Journal of the Korean Society for Aeronautical & Space Sciences, 2011 In this paper, a collision avoidance maneuver frequency for the KOMPSAT-2 and the KOMPSAT-5 is analyzed. For the statistical prediction of the avoidance maneuver frequency, mission orbits, responsive time, accepted collision probabilities, and positional uncertainties of primary and secondary objects are considered. In addition, the collision avoidance
Eun-Hyouek Kim +3 more
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Applications of satellite ‘hyper-sensing’ in Chinese agriculture:Challenges and opportunities [PDF]
, 2018 Ensuring adequate food supplies to a large and increasing population continues to be the key challenge for China. Given the increasing integration of China within global markets for agricultural products, this issue is of considerable significance for ...
Blackburn, George Alan +4 more
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X-band synthetic aperture radar methods [PDF]
, 2020 Spaceborne Synthetic Aperture Radars (SARs), operating at L-band and above, offer microwave observations of the Earth at very high spatial resolution in almost all-weather conditions. Nevertheless, precipitating clouds can significantly affect the signal
Marzano F. S., Mori S., Pierdicca N.
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Radargrammetry of high resolution synthetic aperture radar onboard KOMPSAT-5 [PDF]
2010 IEEE International Geoscience and Remote Sensing Symposium, 2010 This paper reports the preliminary results on the study of radargrammetry especially for a high-resolution satellite synthetic aperture radar system. Theoretical configurations for radargrammetry in terms of coverage, orbit selection, incidence angles, height sensitivity of parallax and height resolution of DEM were calculated according to the proposed
openaire +1 more source
Development of Mobile Active Transponder for KOMPSAT-5 SAR Image Calibration and Validation [PDF]
The Journal of Korean Institute of Electromagnetic Engineering and Science, 2013 KOMPSAT-5(KOrea Multi-Purpose SATellite-5) has a benefit of continuously conducting its mission in all weather and even night by loading SAR(Synthetic Aperture Radar) payload, which is different from optical sensor of KOMPSAT-2 satellite. During IOT(In-Orbit Test) periods, SAR image calibration should be conducted through ground target of which ...
Durk-Jong Park, Kyung-Whan Yeom
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Detection of Damaged Buildings Using Temporal SAR Data with Different Observation Modes
Remote Sensing, 2023 Synthetic Aperture Radar (SAR) remote sensing has been widely used as one of the most effective tools for responding to earthquake disasters. In general, damaged-building detection with SAR data has been conducted based on change detection using temporal
Minhwa Kim, Sang-Eun Park, Seung-Jae Lee
doaj +1 more source
IEEE Access, 2020 Texture in synthetic aperture radar (SAR) images is a combination of the intrinsic texture of scene backscattering and the texture due to noncoherent high-frequency multiplicative noise (HMN) interactions that reflect erroneous information and lead to ...
Iman Heidarpour Shahrezaei +1 more
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