正弦调频连续波雷达数字中频信号处理机的设计

采用ADC＋FPGA＋DSP模式设计了一种正弦调频连续渡雷达数字中频信号处理机。该处理机利用了数字接收机和恒虚警检测（CFAR）原理实现了目标多普勒信号提取、检测和存储，具有体积小、功耗低、可靠性高等特点，且具有一定的灵活性和可扩展性。介绍了处理机各组成部分的功能及参数选择，并分析了处理机所用的恒虚警检测算法。测试结果表明，该处理机克服了采用模拟接收电路的固有缺点，提高了通道一致性和测量精度。

Design of a Digital IF Signal Processing System for Sinusoid-FM-CW Radar

A digital IF signal processing system for sinusoid-FM-CW radar is designed based on ADC FPGA DSP model.This signal processing system realizes the acquiring,detection and storage of target''s Doppler signal using digital receiver and CFAR detection theory.It has the characters of small size,low power consumption and high reliability.It also has some kind of agility and expansibility.The function and parameter choice of the signal processing system is introduced,and then the algorithm of CFAR detection is analyzed.It is proved by experiments that the signal processing system overcomes the inherent disadvantage of the analog receiver circuits,increases the channel consistency and measuring precision.