激光技术2025，Vol.49Issue(1)：53-61,9.DOI:10.7510/jgjs.issn.1001-3806.2025.01.009
利用匹配滤波的调频连续波激光测距技术研究
Frequency modulation continuous wave laser ranging technique utilized matched filtering
张鹏 1封治华 1张鹏飞 1赵渊明 1阮友田 1韩文杰 1张辉 1康朝阳1
作者信息
- 1. 中国电子科技集团公司第二十七研究所,郑州 450047,中国
- 折叠
摘要
Abstract
There exist the problems of short range measurement,noise interference,and influence of nonlinear frequency modulation by using frequency modulation continuous wave(FMCW)laser ranging technique based on beat frequency algorithm.In order to solve these problems under the same institutional condition,the ranging method based on matched filtering was proposed in this paper.Novel method modifies The optical path was modified,such as adding signal reversal unit and signal conjugate unit,replacing the mixer with a convolver.At same time,the system response and transmission waveform matching was satisfied,and the simulation experiment was carried out in this paper.The result of simulation show that ranging by matched filtering can get twice detection distance and 9.5 dB higher signal-to-noise ratio(SNR)than ranging by beat frequency algorithm,and spectral resolution from matched filtering were higher than that from beat frequency algorithm in the condition of nonlinear frequency modulation error were 19.8 MHz,198 MHz and 396 MHz,reveal the ability of reduce the influence of nonlinear frequency modulation.This study can provide technical guidance and new ideas for researchers in this field.关键词
激光技术/调频连续波/匹配滤波/激光测距/信噪比/非线性Key words
laser technique/frequency modulation continuous wave/matched filtering/laser ranging/signal-to-noise ratio/nonlinear分类
信息技术与安全科学引用本文复制引用
张鹏,封治华,张鹏飞,赵渊明,阮友田,韩文杰,张辉,康朝阳..利用匹配滤波的调频连续波激光测距技术研究[J].激光技术,2025,49(1):53-61,9.
