摘要
合成孔径雷达是一种重要的遥感手段。对于高分辨率机载合成孔径雷达成像来说,由于载机不可能完全理想地沿着直线进行匀速运动,高精度的运动补偿是至关重要的。载机的平台运动误差通常可以由运动传感器得到,分为地速误差和视线方向误差。文中对存在运动误差情况下的合成孔径雷达回波数据进行了分析,结合RD算法提出一种对运动误差进行有效补偿的方案。并通过仿真,验证了该方案的有效性和可行性。
Synthetic aperture radar is an important remote sensing means. Since it＇s impossible for airplane to fly along a straight line with the same velocity, highly accurate motion compensation for airborne platform is necessary. The motion error of airborne platform could be measured by motion sensors, and it consists of ground speed error and LOS （ line of sight ） error. This paper analyzes the raw data of synthetic aperture radar in which there exists movement error, and proposes an algorithm to offset the movement error. Test with simulated data proves the concept is valid and feasible.
出处
《现代雷达》
CSCD
北大核心
2007年第6期51-53,56,共4页
Modern Radar
关键词
合成孔径雷达
运动补偿
距离-多普勒算法
synthetic aperture radar
movement compensation
range-doppler algorithm
