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论文介绍了新近研制的一种由高速DSP实现实时控制的自适应海杂波滤波器。重点围绕滤波器多种工作模式下的时间同步与实时控制。作为控制中心主要完成各距离段上杂波谱的自动搜索与捕获,实时将杂波谱锁定在滤波器凹口处,以实现多种工作模式的转换等。系统设计较好地利用了DSP芯片TMS32020的内部资源。滤波器性能达到设计要求并与理论分析相吻合。该系统已用于某地面雷达的技术改造。
The paper introduces a newly developed adaptive sea clutter filter controlled by high-speed DSP. Focus on the filter around a variety of working modes of time synchronization and real-time control. As the control center, it mainly completes the automatic search and capture of the clutter spectrum in each distance segment, and locks the clutter spectrum in the notch of the filter in real time so as to realize the conversion of various working modes and the like. The system design makes good use of the internal resources of DSP chip TMS32020. The filter performance meets the design requirements and is consistent with the theoretical analysis. The system has been used for the technical transformation of a surface radar.