FMCW雷达河面污染物检测系统的设计与实现

Design and implementation of FMCW radar system for river pollutants detection

针对河面污染监测精度低、实时监测差的问题,通过对调频连续波(FMCW)的分析和研究,设计实现了一种FMCW探测雷达。通过ZedBoard信号处理板对污染物的I、Q两路差频信号做两次FFT算法处理,测得目标污染物的速度和距离信息,速度最大误差为6%,距离最大误差为4.9%。测试结果表明,其可分辨河面污染目标物体,具有较好的分辨能力,同时有实时监控告警提醒能力,可应用于河面污染物探测中,提高了河面污染物探测效率。

Aiming at the problems of low monitoring accuracy and insufficient real⁃time monitoring of river surface pollution,through the analysis and research of Frequency Modulated Continuous Wave(FMCW),a FMCW detection radar was designed and realized.Through the ZedBoard signal processing board,the I and Q difference frequency signals of the pollutants are processed twice by the FFT algorithm,and the speed and distance information of the target pollutants are measured.The maximum error of speed is 6%and the maximum error of distance is 4.9%.The test results show that it can distinguish the target objects of river surface pollution,has good discrimination ability,and has real⁃time monitoring and alarm reminder ability,which can be applied to the detection of river surface pollutants and improves the detection efficiency of river surface pollutants.