多DSP共享总线紧耦合并行雷达信号处理方法

Radar Signal Parallel Processing Method Based on Shared Bus Tight Coupling DSP

针对MUSIC算法运算量较大、单片DSP处理速度较慢的问题,研制了一个高速空间谱估计处理器,该处理器在硬件上采用6片ADI公司高性能浮点ADSP21160NCB-100共享总线紧耦合并行处理的设计,将性能优良的基于阵列信号处理的谱估计算法应用到雷达信号测向实际工程中,以实现高精度、超分辨、高实时性的二维到达角估计。实测结果表明:该方法提高了系统的测向速度,实现了对目标测向的MUSIC算法,推动了空间谱估计算法的工程应用。

In view of large computation amount and low processing speed of single processor of MUSIC algorithm,a high-speed spatial spectrum estimation processor was developed. It took use of six ADI high performance floating point ADSP21160NCPr100 for the shared bus tight coupling parallel processing,and applied spectral estimation algorithm based on array signal processing to achieve two-dimensional AOA of high precision, resolution and real-time performance. Actual measuring result indicated that this method could fasten the speed of the direction finding, implement the location searching MUSIC algorithm, and promote the engineering application of spatial spectrum estimation algorithm.