摘要
基于分布式卫星INSAR(InterferometricSyntheticApertureRadar)系统的特点,建立了分布式卫星INSAR系统中天线指向误差和由此引起的天线波束偏离的确定关系,分析了天线波束偏离引起的接收信号信噪比、多普勒中心以及方位模糊比的变化和由此产生的测高误差.根据分析结果和系统设计中的误差分配可以提出对天线指向误差的限制.
According to the characteristics of distributed satellites INSAR system, this paper derives the relation between the antenna pointing error and the antenna beam misalignment, analyses the influences induced by azimuth beam misalignment on receiving signal-to-noise ratio, Doppler centroid and azimuth ambiguity-to-signal ratio and the resulting height error. The constraint condition of the antenna pointing error is provided according to error distributed in system design.
出处
《测试技术学报》
EI
2004年第2期151-155,共5页
Journal of Test and Measurement Technology
关键词
分布式卫星
干涉合成孔径雷达
数字高程图
天线指向
distributed satellites
interferometric synthetic aperture radar(INSAR)
digital elevation model(DEM)
antenna pointing
error analysis
