摘要： 针对调频连续波（FMCW）汽车防撞雷达实际信号的特点，设计了一种数字信号处理器（DSP）程控自适应滤波器，介绍了其原理与具体实现方法，并结合防撞雷达有用双频信号提取的实例，分析了该滤波器的硬件结构和软件流程。试验数据表明，该自适应滤波器可以有效地去除干扰并实现有用信号的精确提取。

关键词: DSP, 适应滤波器, 雷达

Abstract: Focusing on the actual signal of the frequency modulated continuous wave(FMCW) automotive collision avoidance radar, an adaptive filter controlled by digital signal processor(DSP) is designed, then its principle and implementation method are shown here. And combining the instance of extracting the useful two-frequency signal of the radar system, it analyses the structure of the hardware circuit and the software flow. The experiment result proves that the adaptive filter can effectively decrease the influences of both disturbances and noises, and can successfully keep the useful signal.

中图分类号: 

• TN957.51