空间(卫星)SAR/MTI应用辅助波束的多星形式分析

Performance Analysis of Multistatic Configuration for Spaceborne SAR/MTI Based on the Auxiliary Beam Approach

对多接收卫星SAR/MTI(合成孔径雷达/动目标显示)进行了分析,主要目的是测量MTI的运动方向和速度。用辅助波束去除地杂波,比较了2种3个接收卫星之间的基线长度的优缺点,在甚短基线(卫星之间相差1 m)有很高的分辨率,缺点是当MTI运动和卫星运动相同时不能发现动目标。在长基线(100 m)情况,所有运动方向均能进行MTI,但分辨率不如短基线好。

The paper presents an analysis of muhistatic SAR satellites configuration for their MTI capabili- ty based on auxiliary beam approach. The main feature of this method is to estimate both velocity and direction of target motion. The paper compare a very short baseline and a long baseline, then point out their advantages and disadvantages.