分析了机载合成孔径雷达天线口径对成像处理的影响。比较了方位向预滤波降采样方法与子孔径处理方法各自的优缺点。针对子孔径处理方法，提出了一种实时处理系统的结构。最后以实际处理结果对以上各点进行了验证。

The influence of airborne SAR antenna aperture on imaging process is analyzed. The advantage and disadvantage of the method of azimuth pre-fihering and undersampling and the method of subaperture processing are compared. A system structure for real-time subaperture processing is presented. Finally, all concepts are verified by practical processing results.

TN958 TN959.73