准连续波跟踪雷达信号处理机的设计与实现

The Design and Realization of Quasi continuous Tracking Radar Signal Processor

目的 开发适合准连续波跟踪雷达特点的高性能数字信号处理机方法 根据准连续波雷达的特点,以中频采样技术代替传统的模拟双通道采样在处理机设计方面,用高性能的通用浮点DSP代替专用DSP,并采用了并行处理结构结果 本实现方法与传统的模拟实现方法相比,镜频抑制比可提高近1倍结论 中频采样技术适合准连续波雷达体制另外,利用通用DSP作为处理机的硬件平台,用软件实现全部信号处理功能,从而简化系统结构,增加灵活性。

Aim To develop the high performance digital radar signal processor fitting with quasi continuous wave tracking radar. Methods The conventional quadrature couple channels analog sampling was substituted with IF sampling. And in the design of the processor, general purpose float point DSP was used instead of the specific purpose DSP, and parallel architecture was also used. Results Comparing with the conventional andlog realization, the method proposed here can double the mirror error rejection ratio. Conclusion IF sampling is very suitable for quasi continuous wave radar. In addtion, taking the general purpose DSP as the hardware platform and realizing all the signal processing by software can simplify the design of the processor as well as increasing flexibility, so that it is a good idea for the development of signial processor.