摘要
合成孔径雷达(SAR)实时成像处理是一种典型的流水线结构,要分为很多步骤分开进行处理,并且数据量大,算法复杂.根据这些特点,我们基于ADSP-TS101S芯片,利用其链路口进行点对点通信,设计了松耦合结构通用多DSP并行信号处理板,以进行雷达实时成像处理.基于此板,我们对松耦合多片DSP的互联拓扑结构及如何利用乒乓原则增加并行度进行了介绍,并对此种结构多片DSP平台进行并行软件设计的基本方法进行了研究.最后,举例说明,对SAR处理中常用的大点数FFT算法,进行了具体实现.实践证明,利用这些方法进行多DSP并行软件设计既简洁又高效.
The SAR real-time imaging process is a typical pipelined structure, which includes many complicated algorithms such as FFT. Because of their complexity, for large data rate, it takes too long time to implement in real-time processing with single current DSP, which needs multi-DSP for parallel computing. So we developed multi-DSP platform based on ADSP-TS101S, and several parallel software programming methods on such loose coupling architecture multi-DSP platform is studied. Also 16 k complex points float point FFT algorithm is implemented as an example, which testified the briefness and correctness of these methods.
出处
《电子器件》
CAS
2007年第1期307-310,共4页
Chinese Journal of Electron Devices
