用ADSP21062高速信号处理系统实现机载SAR实时成像处理器的方位向处理

机载SAR实时成像处理器可以在载机飞行的同时获得高分辨率的SAR图像，对于实地监测，军事侦察等应用具有重要意义，实时成像处理器就是用高速数字信号处理系统来实时地实现SAR的成像算法，该文介绍SAR实时成像处理器方位向处理部分的研制，该部分采用了自行开发的，基于ADSP21062的高速信号处理系统。8片ADSP21062被安排在4个并行处理通道中，具有960MFLOPS的峰值处理速度，优化的软件设计保证了硬件资源的利用效率，仿真测试和外场实验证明了该系统的设计是成功的，该文对方位向处理部分的实现原理、硬件结构、软件设计进行了详细介绍。

Using ADSP21062 based hgh-speed signal processing system to implement azimuth processing of real-time imager for airborne SAR

Real-time Imager can provide Synthetic Aperture Radar(SAR) image in real-time mode which is significant for airborne SAR applications such as real-time monitoring and battle reconnaissance. A SAR real-time imager usually implements SAR imaging algorithms with high-speed DSP system. This paper describes a high-speed DSP system based on ADSP21062 to realize azimuth processing with range-Doppler algorithm, consisting of range migration correction and azimuth compression. 8 ADSP21062s are organized in 4 parallel processing blocks in this system achieving a processing speed of 960MFLOP. Elaborate software programming ensures a high efficient utilization of hardware. Experimental simulation and field flight indicate this system is successful. The principle architecture, hardware implementation and software design are presented in this paper in details.