一种距离高分辨力雷达实时信号处理机的设计与实现

Design and Implementation of a High Range-Resolution Radar Real-time Signal Processor

现代高性能的雷达系统对雷达信号处理系统的计算能力、存储能力以及传输能力等提出了更高的要求。以多片高性能的数字信号处理器(DSP)为运算核心,通过高速数据连接网络构成的并行信号处理系统能够满足系统的高速复杂的运算以及大的数据吞吐量的要求。本文在详细分析某型距离高分辨力雷达信号处理机的需求的基础上,提出了适合该雷达信号处理机的系统结构,并采用8片ADI的超高性能浮点DSP芯片—ADSP-TS201S为核心设计并实现了一种高速实时并行信号处理机。该处理机的设计充分考虑了雷达实时信号处理的特点,遵循可编程、可扩展、可重构的原则,为系统性能的提升提供了较大的空间,并可用来构造多种不同需求的雷达信号处理系统。目前,该信号处理机已经调试成功并通过了外场试验。

Higher requirements for the real-time processing capacity of the radar signal-processing system are put forward with the development of modem radar system. The requirements of high-speed complex algorithm and high data throughput can he satisfied by the parallel signal-processing system with multiple high-performance DSPs connected with high-speed data network. A system configuration is put forward based on the detailed analysis of the system requirements and a high-speed real-time parallel signal processor is developed based on 8 ultrahigh performance float-point DSPs--ADSP-TS201S. The characteristic of the radar real-time signal-processing is well considered in the design of the system and the principle of programmable capability, scalahility and restructure capability is applied. More room is provided for the upgrade of the performance of the system and radar signal-processing sytem with various requirements can he realized. The board has been applied in the development of a signal-processing system successfully.