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Volume 32 Issue 8
Sep.  2010
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Zheng Jing-Bo, Song Hong-Jun, Sang Xiu-Qin, Wu Yong. An Algorithm Based on Spectrum Shift for Improving Range Resolution Using GEO Spaceborne/Airborne Multistatic SAR[J]. Journal of Electronics & Information Technology, 2010, 32(8): 1863-1868. doi: 10.3724/SP.J.1146.2009.01136
Citation: Zheng Jing-Bo, Song Hong-Jun, Sang Xiu-Qin, Wu Yong. An Algorithm Based on Spectrum Shift for Improving Range Resolution Using GEO Spaceborne/Airborne Multistatic SAR[J]. Journal of Electronics & Information Technology, 2010, 32(8): 1863-1868. doi: 10.3724/SP.J.1146.2009.01136

An Algorithm Based on Spectrum Shift for Improving Range Resolution Using GEO Spaceborne/Airborne Multistatic SAR

doi: 10.3724/SP.J.1146.2009.01136 cstr: 32379.14.SP.J.1146.2009.01136
  • Received Date: 2009-08-27
  • Rev Recd Date: 2010-01-27
  • Publish Date: 2010-08-19
  • In this paper, the GEO spaceborne/airborne multistatic SAR geometry model with one fixed transmitter and multiple receivers is proposed, and the spectrum shift between different receiver echoes is derived. Based on the spectrum shift, a new algorithm for improving range resolution of this model by composing spectrums of different receivers is proposed. The overlapped interference term, which is induced during spectrum composing, and its influence on range resolution, is analyzed in detail, and a method by weight filtering is provided to remove the interference term. Finally, simulation is employed to test validity of the algorithm.
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  • Yates G, Horne A M, and Blake A P, et al.. Bistatic SARimage formation[C]. Proc. EUSAR, Ulm, Germany, May 2004:581-584.[2]周鹏, 皮亦鸣. 一种实用化的星机双基地SAR 空间同步方法[J].电子与信息学报.2008, 30(6):1312-1315浏览[3]Ling Lei, Zhou Yin-qing, and Li Jing-wen, et al..Synchronization of GEO spaceborne-airborne bistaticSAR[C]. IGARSS, Boston, Massachusetts, USA, July 6-11,2008, Vol.3: 1209-1211.[4]Wang Yan-yu, Zhang Chang-yao, and Wang Jin-gen. Studyof synchronization between geostationary illumination andbistatic reception[C]. APSAR, Huangshan, China, Nov. 5-9,2007: 614-617.[5]史洪印, 周荫清, 陈杰. 同步轨道星机双基地三通道SAR 地面运动目标指示算法[J].电子与信息学报.2009, 31(8):1881-1885浏览[6]Prati C and Rocca F. Improving slant-range resolution withmultiple SAR survey[J].IEEE Transactions on Geoscienceand Electronic Systems.1993, 29(1):135-143[7]徐华平, 周荫清, 李春升. 基于频谱偏移估计的分布式星载SAR 提高距离向分辨率的数据处理方法[J]. 电子学报, 2003,31(12): 1790-1794.Xu Hua-ping, Zhou Yin-qing, and Li Chun-sheng. Analgorithm based on spectrum shift estimation for improvingrange resolution using distributed spaceborne interferometricSAR[J]. Acta Electronica Sinica, 2003, 31(12): 1790-1794.[8]张云华, 江碧涛, 姜景山, 等. 干涉SAR 提高地距方向分辨率的简明推导[J]. 电波科学学报, 2007, 22(4): 619-625.Zhang Yun-hua, Jiang Bi-tao, and Jiang Jing-shan, et al.. Aconcise formula derivation for ground-resolution improvementby InSAR[J]. Chinese Journal of Radio Science, 2007, 22(4):619-625.[9]Liu Bao-quan, Feng Da-zheng, and Shui Peng-lang, et al..Analytic search method for interferometric SAR imageregistration[J].IEEE Geoscience and Remote Sensing Letters.2008, 5(2):294-298[10]石晓进, 张云华. 基于Fourier-Mellin 变换和相干系数法的重复轨道干涉SAR 图像配准新方法[J].电子与信息学报.2009,31(4):803-807浏览[11]Reigber A. Range dependent spectral filtering to minimizethe baseline decorrelation in airborne SAR interferometry[C].IGARSS, Hamburg, Germany, 1999: 1721-1723.
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