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Volume 30 Issue 5
Dec.  2010
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Zhao Ying-hui, Wang Yan-fei. A New GMTI Method Based on Chirp-Z Transform for Distributed Satellites Interferometric SAR[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1056-1059. doi: 10.3724/SP.J.1146.2006.01651
Citation: Zhao Ying-hui, Wang Yan-fei. A New GMTI Method Based on Chirp-Z Transform for Distributed Satellites Interferometric SAR[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1056-1059. doi: 10.3724/SP.J.1146.2006.01651

A New GMTI Method Based on Chirp-Z Transform for Distributed Satellites Interferometric SAR

doi: 10.3724/SP.J.1146.2006.01651
  • Received Date: 2006-10-30
  • Rev Recd Date: 2007-03-09
  • Publish Date: 2008-05-19
  • Distributed satellites interferometric SAR is capable of detecting ground moving targets via along-track baseline. In this paper, the signal model and phase compensation for this INSAR system is analyzed firstly. A new method based on Chirp-Z transform for GMTI in range-Doppler domain is proposed. The received data of different channels can be co-registered precisely along azimuth direction after being transformed into Doppler domain via CZT, and moving target can be detected through interferometry procedure combined with spectrum phase compensation. In the end, the constraints of multistatic SAR configuration by spectrum phase compensation and target motion by spectrum co-registration are discussed. The final simulation demonstrates that this algorithm can detect moving target efficiently.
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  • Pascazio V, Schirinzi V, and Farina A. Moving targetdetection by along-track interferometry. Int. Geoscience andRemote Sensing Symposium (IGARSS), Sydney(AUS), 2001:3024-3026.[2]Gill E and Runge H. Tight formation flying for an alongtrackSAR interferometer[J].Acta Astronautica.2004, 55(3/9):473-485[3]Krieger G, Fiedler H, Mittermayer J, Papathanassiou K, andMoreira A. Analysis of multistatic configurations forspaceborne SAR intereometry[J].IEE Proc.Radar Sonar Navig.2003, 150(3):87-96[4]Cantalloube H, Dubois-Fernandez P, Giroux V, and KriegerG. Bistatic moving target indication, using across-track andalong-track interferometry. EURSAR, Dresden, Germany,2006. ID/155.[5]李景文,李春升,周荫清. 三孔径INSAR 动目标检测和成像.电子学报,1999, 27(6): 40-43.Li Jing-wen, Li Chun-sheng, and Zhou Yin-qing. ThreeapertureINSAR moving targets detection and imaging. ActaElectronica Sinica, 1999, 27(6): 40-43.[6]郑明洁. 合成孔径雷达动目标检测和成像研究. [博士论文].北京: 中国科学院电子学研究所, 2003.Zheng Ming-jie. The study of moving target detection andimaging for SAR.[Doctoral dissertation], Beijing: Institute ofElectronics, Chinese Academy of Sciences, 2003.[7]Didier Massonnet, Jean-Claude Souyris, and Jean-MarcGaudin. Radar processing and geometric specificity ofbistatic data. International Geoscience And Remote SensingSymposium (IGARSS), Toulouse, France, 2003, 3: 1459-1461.[8]高鑫. InSAR 误差分析与图像配准、相位解缠关键技术研究.博士后研究工作报告,中国科学院遥感应用研究所,2003.Gao Xin. Error analysis of InSAR and its key techniquesresearch: image registration and phase unwrapping[Post-Doctor Research Report]. Beijing: Institute of RemoteSensing Applications, Chinese Academy of Sciences, 2003.[9]Shen Chiu. A constant false alarm rate (CFAR) detector forRADARSAT-2 along-track interferometry. Can.J.RemoteSensing, 2005, 31(1): 73-84.
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