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《Journal of Electronics & Information Technology》 2008-02
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Effect of Air Hybrid Mode SAR Beam Point Steering on the Image Quality

Jiang Yan-ting Zhou Yin-qing Xu Hua-ping (School of Electronic and Information Engineering, Beihang University, Beijing 100083, China)  
A mathematical model of the illumination intensity, which is imposed on the point target by the radar beam step steered, is proposed for the hybrid mode SAR system. By the analysis of azimuth compressed echo signal, combining mathematical deduction, the effects of beam pointing on the image quality are proposed, which are including: the steering time of beam pointing causes infinite paired echo; the hybrid factor causes the extension of the main lobe, which results in the decrease of azimuth resolution; the hybrid factor causes the decrease of the side lobe, which increases the effect of paired echo on the image quality; the interaction of the hybrid factor and the steering time of beam pointing causes aberration of echo. These are also demonstrated by the simulation. Finally, the suggestion of establishment of the hybrid mode SAR antenna beam point steering is proposed.
【CateGory Index】: TN957.52
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 HUANG Yan LI Chun sheng CHEN Jie ZHOU Yin qing (Beijing University of Aeronautics and Astronautics,Dept. of Electronic Engineering);Effects of Stability of Antenna Pointing on Spaceborne SAR Imaging Quality[J];JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS;2000-03
2 Wang Guodong Zhou Yinqing;Analysis of Air Spotlight SAR Antenna Beam Point Steering[J];Telemetry & Telecontrol;2005-03
【Co-citations】
Chinese Journal Full-text Database 6 Hits
1 Wang Guodong Zhou Yinqing Li Chunsheng (Dept. of Electronic Engineering, Beijing University of Aeronautics and Astronautics);Analysis of Spaceborne Spotlight SAR Antenna Beam Point Steering[J];Journal of Beijing University of Aeronautics and Astronautics;2003-06
2 WANG Peng-bo,ZHOU Yin-qing,CHEN Jie,LI Chun-sheng(Electronic and Information Engineering Institute,Beijing University of Aeronautics and Astronautics,Beijing 100083,China);Effect of Satellite Attitude Jitter on Spotlight SAR Imaging Quality[J];Radar Science and Technology;2006-05
3 ZHU Li~1,QIU Guang-feng~1,PAN Jie~2(1.Nanjing Research Institute of Electronics Technology,Nanjing 210013,China)(2.Institute of Electronics,Chinese Academy of Sciences,Beijing 100080,China);Analysis of Antenna Boresight Pointing Instability Effect on SAR Image Quality[J];Modern Radar;2006-01
4 WANG Peng-bo,ZHOU Yin-qing,CHEN Jie,LI Chun-sheng(Electronic Information Engineering Institute,Beijing University of Aeronautics and Astronautics,Beijing 100083,China);Effect of Satellite Attitude Stability on Spotlight SAR Imaging[J];Modern Radar;2007-08
5 Wang Guodong Zhou Yinqing;Analysis of Air Spotlight SAR Antenna Beam Point Steering[J];Telemetry & Telecontrol;2005-03
6 Wei Jie,Zhou Yinqing;Effects of Stability of Antenna Pointing on Spaceborne ScanSAR Radiometric Correction[J];Journal of Telemetry, Tracking and Command;2007-01
【Secondary Citations】
Chinese Journal Full-text Database 2 Hits
1 HUANG Yan LI Chun sheng CHEN Jie ZHOU Yin qing (Beijing University of Aeronautics and Astronautics,Dept. of Electronic Engineering);Effects of Stability of Antenna Pointing on Spaceborne SAR Imaging Quality[J];JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS;2000-03
2 WANG Guo dong,ZHOU Yin qing,LI Chun sheng (Dept of Electronic Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China);Refined ECS algorithm for high-resolution spaceborne spotlight SAR imaging[J];Journal of Astronautics;2003-01
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