期刊文献+

一种改进的基于DEM的机载重轨干涉SAR运动补偿算法 被引量:7

An Improved Topography-Dependent Motion Compensation Approach for Airborne Repeat-Pass Interferometric SAR Systems
下载PDF
导出
摘要 该文研究了基于DEM(Digital Elevation Model)的高精度重轨干涉SAR运动补偿算法。分析了平地假设及波束中心近似造成的残余运动误差的影响,表明对重轨干涉SAR系统进行基于DEM的高精度运动补偿的必要性。分析了对外部DEM数据精度要求,指出利用低精度DEM数据进行精确运动补偿获取高精度DEM数据的可行性。针对现有基于DEM运动补偿算法的不足提出改进算法。该算法根据载机轨迹偏移和地形起伏自动调节参数,可实现精确且高效的运动补偿。对X波段重轨干涉SAR数据进行运动补偿处理,验证了该算法的有效性及其在精度和效率两方面相比于现有算法的优势。 In this paper, the precise topography-dependent motion compensation for repeat-pass InSAR is studied. The effects of the residual motion errors caused by the flat surface assumption and center-beam approximation are analyzed, which shows the necessity of performing a precise topography-dependent motion compensation for the repeat-pass InSAR systems. The precision requirement for the external DEM data is analyzed to show the feasibility of deriving precise DEM data by motion compensation based on rough DEM data. An improved approach is presented according to the deficiencies of the existing topography-dependent motion compensation approaches. It can adjust the parameters according to the conditions of trajectory deviations and topography variations, so it has the advantage of performing the precise motion compensation efficiently. Finally, the processing results of the X-band airborne repeat-pass interferometric SAR data confirm its validity and superiority in precision and efficiency compared to the original algorithms.
出处 《电子与信息学报》 EI CSCD 北大核心 2009年第5期1090-1094,共5页 Journal of Electronics & Information Technology
关键词 干涉SAR 机载重轨干涉测量 运动补偿 DEM 残余运动误差 波束中心近似 InSAR Airborne repeat-pass interferometry Motion compensation DEM Residual motion errors Center-beam approximation
  • 相关文献

参考文献5

  • 1Reigber A, Prats P, and Mallorqui J J. Refined estimation of time-varying baseline errors in airborne SAR interferometry [J]. IEEE Geoseience and Remote Sensing Letters, 2006, 3(1): 145-149.
  • 2Fornaro G, Francescetti G, and Perna S. On center-beam approximation in SAR motion compensation [J]. IEEE Geoscience and Remote Sensing Letters, 2006, 3(2): 276-280.
  • 3Prats P, Reigber A, and Mallorqui J J. Topography- dependent motion compensation for repeat-pass interferometric SAR systems [J]. IEEE Geoscience and Remote Sensing Letters, 2005, 2(2): 206-210.
  • 4De Macedo K A C and Scheiber R. Precise topography- and aperture- dependent motion compensation for airborne SAR [J]. IEEE Geoscience and Remote Sensing Letters, 2005, 2(2): 172-176.
  • 5Fornaro G, Franceschetti G, and Perna S. Motion compensation errors: Effects on the accuracy of airborne SAR images [J]. IEEE Trans. on Aerospace and Electronic Systems, 2005, 41(4): 1338-1352.

同被引文献46

  • 1陈远征,朱永锋,赵宏钟,付强.基于包络插值移位补偿的高速运动目标的积累检测算法研究[J].信号处理,2004,20(4):387-390. 被引量:35
  • 2杨杰,潘斌,李德仁,钟永正.无地面控制点的星载SAR影像直接对地定位研究[J].武汉大学学报(信息科学版),2006,31(2):144-147. 被引量:28
  • 3韦立登,向茂生,吴一戎.POS数据在机载干涉SAR运动补偿中的应用[J].遥感技术与应用,2007,22(2):188-194. 被引量:12
  • 4Griffiths H D and Baker C J. Passive coherent location radar systems. Part 1: performance predication[J]. IEE Proceedings Radar Sonar Navigation, 2005, 152(3): 153-159.
  • 5Saini R and Cherniakov M. DTV signal ambiguity function analysis for radar application[J]. IEE Procedings Radar Sonar Navigation, 2005, 152(3): 133-142.
  • 6Chen C C and Andrews H C. Target-motion-induced radar imaging[J]. IEEE Transactions on Aerospace and Electronic Systems, 1980, 16(1): 1-14.
  • 7Xing Meng-dao, Jiang Xiu-wei, Wu Ren-biao, Zhou Feng, and Bao Zheng. Motion compensation for UAV SAR based on raw radar data[J]. IEEE Transactions on Geoscience and Remote Sensing, 2009, 47(8): 2870-2883.
  • 8Callow H J, Hayes M P, and Gough P T. Motion- compensation improvement for widebeam, multiple-receiver SAS systems[J]. IEEE Journal of Oceanic Engineering, 2009, 34(3): 262-268.
  • 9Yasotharan A and Thayaparan T. Time-frequency method for detecting an accelerating target in sea clutter[J]. IEEE Transactions on Aerospace and Electronic Systems, 2006, 42(4): 1289-1310.
  • 10Xia Xiang-gen. Discrete chirp-Fourier transform and its application to chirp rate estimation [J]. IEEE Transactions on Signal Processing, 2009, 40(11): 3122-3133.

引证文献7

二级引证文献42

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部