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(一)基本原理 合成孔径雷达发射的微波脉冲辐照测绘带内的地物目标;而接收的回波则由显示器和记录器记录在数据胶卷上。触发显示器扫描的距离延迟脉冲与发射脉冲之间的时延由雷达到测绘带近地点的双程差决定,这种时间关系是预先确定的。因此定时器的时间抖动引起的时延变化和雷达载机的横向运动引起的双程差变化都会产生时间
(A) of the basic principles Synthetic Aperture Radar microwave pulse radiation mapping within the target object; and received echo by the monitor and recorder recorded in the data film. Distance to Trigger the Display Scanning The delay between the delayed pulse and the transmitted pulse is determined by the two-way difference between the radar and the near point of the swath and this time is predetermined. Therefore, the time delay caused by the timer jitter and the two-way difference caused by the lateral movement of the radar carrier will produce time