主星带编队小卫星顺轨干涉GMTI及性能分析
ATI-GMTI of Spaceborne Parasitic Radar System
-
摘要: 该文针对主星带编队小卫星雷达系统，讨论了基于修正的顺轨干涉(ATI)原理进行地面动目标检测方法及其性能。利用小面单元模型仿真了一幅带动目标的地面起伏场景图像，验证了该方法的有效性。综合盲速、最小可检测速度、测速误差等指标，给出了适合执行ATI功能的编队构形部分参数，可为编队小卫星GMTI相对绕飞轨道设计提供一定指导。最后，对CartWheel和Pendulum两种典型系统构形进行了GMTI性能仿真分析。
-
关键词:
- 编队小卫星;顺轨干涉;地面动目标检测
Abstract: In this paper, the ground moving target indication based on modified along-track interferometry of spaceborne parasitic radar system is analyzed. The imaging simulation of a piece of fluctuant terrain with a moving target verifies the validity. The appropriate formation fling parameters are presented when considering some performance metrics, such as the blind velocity, the minimum detectable velocity and the velocity precision. Some conclusions are serviceable of orbital design. Finally, GMTI performance of two typical systems, Cartwheel and Pendulum, is analyzed through computer simulation. -
陈筠力. 单发多收分布式SAR卫星系统初步概念研究. 分布式航天器新概念及其应用技术研讨会. 北京，2004，10: 308-314.[2]Massonnet D. The interferometric cartwheel: A constellation of passive satellites to produce radar images to be coherently combined[J].Int. J. Remote Sensing.2001, 22(12):2413-2430[3]Fiedler H, Krieger G, Jochim F, Kirschner M, Moreira A. Analysis of bistatic configurations for spaceborne SAR interferometry. EUSAR Cologne, Germany, 2002: 29-33.[4]Goldstein R M, Zebker H A. Interferometric radar measurement of ocean surface currents[J].Nature.1987, 328(20):707-709[5]Moccia A. Spaceborne Along_track SAR interferometry: Performance analysis and mission scenarios. IEEE Trans. on AES, 2001, 37(1): 199-213.[6]何峰，梁甸农，刘建平. 星载寄生式SAR多普勒特性分析. 信号处理，2004, 20(5): 475-480.[7]刘建平，梁甸农，何峰. 主星带伴随小卫星编队系统的顺轨干涉SAR性能研究. 电子与信息学报, 2004, 26(增): 500-506[8]Gierull C H. Statistical analysis of multilook SAR interferograms for CFAR detection of ground moving targets[J].IEEE Trans. on Geosciences and Remote Sensing.2004, 42(4):691-701 -
计量
- 文章访问数: 2227
- HTML全文浏览量: 105
- PDF下载量: 901
- 被引次数: 0
下载:
