一种分布式小卫星SAR单视复图像信号仿真方法

徐华平; 陈杰; 王宝发; 周荫清

一种分布式小卫星SAR单视复图像信号仿真方法

北京航空航天大学电子信息工程学院, 北京 100083

详细信息

作者简介:
徐华平(1977-),女,陕西渭南人,博士, huaping xu@sina.com.

中图分类号: TN 959
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- 文章访问数: 2894
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- 被引次数: 0
出版历程
- 收稿日期: 2005-04-20
- 网络出版日期: 2006-04-30

Quick method of distributed small satellite synthetic aperture radar single-look complex image simulation

School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 总结了分布式小卫星合成孔径雷达(DSS-SAR,Distributed Small Satellite Synthetic Aperture Radar)回波信号仿真所需具备的基本功能.给出了DSS-SAR的空间几何模型和信号模型.空间几何模型由描述小卫星编队构形的Hill方程给出,信号模型由单视复图像信号模型、信号相关性模型和干涉相位的统计特性共同描述.结合空间几何模型和单视复图像信号模型,提出了一种简洁的DSS-SAR单视复图像信号的仿真方法.该仿真方法中,小卫星的空间位置是根据虚拟中心空间位置和小卫星的编队构形计算得到,因此仿真时能够任意设置小卫星群的编队构形.通过对圆锥三维地形和平地两种地面场景的进行回波信号仿真,结果表明该仿真方法不但能够实现DSS-SAR信号仿真必须具备的功能,而且还具有实现简洁、误差加入方便等优点.
- 合成孔径雷达 /
- 分布式 /
- 仿真 /
- 算法
Abstract: The basic requirements for echo simulation of DSS-SAR(distributed small satellite synthetic aperture radar) were concluded. The geometry model and signal model of DSS-SAR were presented. Hill equation was employed to illustrate the configuration of small satellites. Single-look complex image signal model, correlation of DSS-SAR echoes and interferometric phase probability density function were given to show the signal characteristics of DSS-SAR. A quick methodwas proposed to simulate single-look complex images of DSS-SAR. The method calculated positions of small satellites with the position of the central point and the small satellite configuration. It can simulate the single-look complex imagesignal of the arbitrary formation small satellite cluster conveniently. The flat and conical terrains were chosen, and the simulated single-look SAR(sythentic aperture radar) complex images were obtained with the proposed method. Computer simulation results show the simulation method not only satisfies the DSS-SAR signal simulation needs, but adds many kinds of error conveniently and simulates signal realistically.
- synthetic aperture radar /
- distributed /
- simulation /
- algorithm

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参考文献(1)

[1] Massonnet D. Capabilities and limitations of the interferometric cartwheel [J]. IEEE Transactions on Geoscience and Remote Sensing, 2001, 39(3):506~520 [2] Li F K, Goldstein R M. Studies of multibaseline spaceborne interferometric synthetic aperture radars [J]. IEEE Transactions on Geoscience and Remote Sensing, 1990, 28(1):88~96 [3] Dupont S, Perlant F, Berthod M. SAMI:an InSAR simulator to improve SAR calibration . IGARSS’1995 . Firenze, Italy:IEEE, 1995. 559~561 [4] Xu W, Cumming I. Simulator for repeat-pass satellite InSAR studies . IGARSS’1997 . Singapore:IEEE, 1997. 1704~1706 [5] Franceschetti G, Iodice A, Migliaccio M, et al. A novel across-track SAR interferometry simulator [J]. IEEE Transactions on Geoscience and Remote Sensing, 1998, 36(3):950~962 [6] van der Kooij M W A, Armour B, Ehrismann J, et al. A workstation for spaceborne interferometric SAR data . IGARSS’1996 . Lincoln, NE, USA:IEEE, 1996. 339~341 [7] Sarabandi K, Lin Y C. Simulation of interferometric SAR response to deciduous and coniferous forest stands . IGARSS’1997 . Singapore:IEEE, 1997. 1887~1889 [8] Franceschetti G, Iodice A, Migliaccio M, et al. Simulation of SAR interferometric raw signal pairs corresponding to real scenes . IGARSS’1998 . Seattle, WA, USA:IEEE, 1998. 2653~2655 [9] Sarabandi K, Azadegan R. Simulation of interferometric SAR response to rough surfaces covered with a dielectric layer . IGARSS’2000 . Honolulu, HI, USA:IEEE, 2000. 1739~1741 [10] De Vita F, Mori A. Raw/SLC signal simulator for spaceborne interferometric SAR systems . IGARSS’2000 Honolulu, HI, USA:IEEE, 2000. 785~787 [11] Chen J, Zhou Y Q, Li C S. Spaceborne synthetic aperture radar raw data simulation of three dimensional natural terrain . 2001 CIE International Conference on Radar Proceedings . Beijing, 2001. 619~623 [12] Franceschetti G, Migliaccio M, Riccio D, et al. SARAS:a synthetic aperture radar (SAR) raw signal simulator [J]. IEEE Transactions on Geoscience and Remote Sensing, 1992, 30(1):110~123 [13] Wu C, Liu K Y, Jin M. Modeling and a correlation algorithm for spaceborne SAR signals [J]. IEEE Transaction on Aerospace and Electronic Systems, 1982, 18(5):563~574 [14] Krieger G, Fiedler H, Mittermayer J,et al. Analysis of multistatic configurations for spaceborne SAR interferometry . IEE Proceedings Radar Sonar Navigation . 2003, 150(3):87~96 [15] 徐华平,周荫清,李春升. 分布式小卫星合成孔径雷达单视复图像信号模型[J].电子与信息学报,2004,26(增):168~172 Xu Huaping, Zhou Yinqing, Li Chunsheng. Signal model of simple look complex image for distributed small satellite synthetic aperture radar [J]. Journal of Electronics & Infromation Technology, 2004, 26(Suppl.):168~172(in Chinese) [16] 徐华平,周荫清,李春升. 分布式小卫星SAR回波信号的相关性[J]. 电子学报,2005,33(6):965~969 Xu Huaping, Zhou Yinqing, Li Chunsheng. Correlation of distributed small satellites SAR echoes [J]. Acta Electronica Sinica, 2005, 33(6):965~969(in Chinese) [17] Just D, Bamler R. Phase statistics of interferograms with applications to synthetic aperture radars [J]. Applied Optics, 1994, 33(20):4361~4368

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