Synthetic Aperture Radar (SAR) gains a high-resolution radar image by compressing the Doppler echo in azimuth direction and the linear frequency modulation (LFM) signal in range direction.

• 合成孔径雷达在方位向对回波多普勒信号进行波束锐化，在距离向对发射的线性调频信号进行脉冲压缩，从而实现高分辨力的雷达图像。