介绍了高分辨率合成孔径雷达实时信号处理机硬件结构和实时信号处理算法及流程。该信号处理机的核心是G4模块，包含4个矢量处理芯片MPC7410，G4模块具有存储容量大和运算速度快的特点。算法上采用工程上较易实现的R-D算法及对比度最优自聚焦算法。利用机载SAR试飞数据验证，得到了高分辨率SAR图像，证明信号处理机稳定有效可靠。

The hardware structure and algorithm flow of real-time signal processor for UAV SAR is introduced in the paper. Based on PowerPC7410,the kernel of the processor is G4 module with the advantage of memory and processing speed. Used with the R D algorithm and CO(contrast optimization),we obtain the high resolution SAR images of the airborne SAR data, this shows that the processor is reliable. The valid autofocus algorithm is the study emphases with regard to the characteristic of UAV. [

TN911 TN958