| 引用本文: | 何峰,梁甸农,刘建平.星载寄生式SAR系统干涉信号模型与相对高程测量性能分析.[J].国防科技大学学报,2005,27(3):72-76.[点击复制] |
| HE Feng,LIANG Diannong,LIU Jianping.The Analysis of Signal Model and Performance for Spaceborne Parasitic Insar Relative Height Measurement[J].Journal of National University of Defense Technology,2005,27(3):72-76[点击复制] |
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| 星载寄生式SAR系统干涉信号模型与相对高程测量性能分析 |
| 何峰, 梁甸农, 刘建平 |
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(国防科技大学 电子科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 以星载寄生式SAR系统成像信号模型为基础，给出了该系统的干涉模型，分析了其特点和限制条件，提出了距离向有效基线和方位向有效基线的新概念。以Cartwheel和Pendulum两种编队构形为实例，分析了寄生式SAR系统有效基线的限制和相对高程测量的性能，结果表明：编队形式固有的基线耦合给性能造成不利影响，在这方面Pendulum编队优于Cartwheel编队构形；距离向和方位向预滤波处理可提高图像对的相关性，但并不能完全去除几何去相关对性能的影响。 |
| 关键词: 星载寄生式SAR 干涉SAR 基线 |
| DOI： |
| 投稿日期：2004-12-10 |
| 基金项目: |
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| The Analysis of Signal Model and Performance for Spaceborne Parasitic Insar Relative Height Measurement |
| HE Feng, LIANG Diannong, LIU Jianping |
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(College of Electronic Science and Engineering，National Univ. of Defense Technology，Changsha 410073, China)
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| Abstract: |
| Based on the radar image model of spaceborne parasitic SAR system, interferometric model of this new system is proposed; new characters and limits are analyzed in detail. The concepts of the range and azimuth effective baseline are given at the same time. The limits of effective baselines and performance of INSAR relative height measurement of Cartwheel and Pendulum configuration are analyzed. The influence of interrelation of the range and azimuth baseline and pre-filtering technology are pointed out. |
| Keywords: spaceborne parasitic SAR INSAR baseline |
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