分析常规的双通道星载合成孔径雷达-偏移相位中心天线(SAR-DPCA)技术检测运动目标的方法，建立了斜距平面坐标系来描述星载合成孔径雷达回波多普勒特性，说明了这种常规动目标检测方法在星载情况下的不足。针对这种情况，提出基于运动平台补偿的双通道星载SAR-DPCA动目标检测方法。该方法通过相位补偿，消除了星地相对径向运动对双通道DPCA杂波对消效果的影响，改善了双通道星载SAR-DPCA系统的动目标估计性能。

The approach of moving targets detection based on conventional dual-channel spaceborne Synthetic Aperture Radar with Displaced Phase Center Antenna(SAR-DPCA) is analyzed. The characteristic of Doppler frequency has been reanalyzed based on slant range coordinate, and the disadvantages of the former method have been presented. The technique based on the motion compensation of the platform is provided, which can eliminate the effect on clutter cancellation caused by the movement between the platform and the ground. This approach can improve the performance of moving targets detection based on dual-channel spaceborne SAR-DPCA system greatly.