量子电子学报2018，Vol.35Issue(2)：216-224,9.DOI:10.3969/j.issn.1007-5461.2018.02.014
基于互相关函数的毫米波雷达测距算法研究
Millimeter wave radar ranging algorithm based on cross-correlation function
摘要
Abstract
The classical linear frequency modulation continuous wave(LFMCW) radar ranging method adopts FFT transform to carry out signal processing.Calculation amount increases significantly with the sampling point increasing,which makes the real-time of ranging system not so ideal.To solve this problem,the cross-correlation function ranging method is introduced.Using the characteristics that LFMCW radar signal frequency change is triangular and the echo delay is less than one cycle,the distance can be measured with only one cycle of cross-correlation operation.Combined with the measured value of the cross-correlation function ranging method,FFT transform is used for the partial sampling points of sampling information,and more accurate distance information can be measured quickly and efficiently.The simulation results of MATLAB show that the average ranging measurement error combing with cross-correlation function is reduced by 1.434 m and the average operation time is reduced by 0.5 s,which improves the real-time performance and accuracy of the ranging system.关键词
信息处理/线性调频连续波雷达测距/快速傅里叶变换/互相关函数/实时性Key words
information processing/linear frequency modulation continuous wave radar ranging/fast Fourier transform/cross-correlation function/real-time performance分类
信息技术与安全科学引用本文复制引用
曹洁,祝菲菲..基于互相关函数的毫米波雷达测距算法研究[J].量子电子学报,2018,35(2):216-224,9.基金项目
Supported by Scientific Research Projects in Gansu Province(甘肃省高校科研项目,2015B-031),Science and Technology Planning Project of Baiyin(白银市科技计划项目,2015-2-33R) （甘肃省高校科研项目,2015B-031）
