摘要
针对利用线性调频连续波雷达探测运动目标需滤除回波中与目标频谱无关频率分量的目的,采用模拟信号处理电路和数字信号处理软件相结合的方法,通过模拟中频信号处理电路实现调制波形产生、滤波放大、波形平移等操作,通过DSP完成了采样、加窗、傅里叶变换等,实现了目标参数经上位机输出。利用雷达系统对运动角反射器的测量,得出距离、速度、方位角测量误差分别不超过1 m、1 m/s、1°,数据刷新周期为60 ms。
Aiming at the purpose of using linear frequency modulation continuous wave radar to detect moving targets,the method of combining analog signal processing circuit and digital signal processing software is adopted.The analog intermediate frequency signal processing circuit is used to achieve modulation waveform generation,filtering and amplifying,and waveform translation operations.Sampling,windowing,Fourier transform and other digital signal processing are completed by DSP.The target parameters are finally output by the host computer.Through the measurement of the moving corner reflector by the radar system,it is found that the measurement errors of range,speed,and azimuth are not more than 1 m,1 m/s,and 1°,respectively,and the data refresh cycle is 60 ms.
作者
颜卫忠
钱婧怡
陈栋志
孔凡伟
YAN Weizhong;QIAN Jingyi;CHEN Dongzhi;KONG Fanwei(R&D Center,Shanghai Aerospace Electronics Co.,Ltd.,Shanghai 201821,China)
出处
《电子设计工程》
2021年第22期155-160,共6页
Electronic Design Engineering
关键词
线性调频
雷达
滤波
中频
DSP
linear frequency modulation
radar
filtering
intermediate frequency
DSP
