激光多普勒测速测振信号处理方法的约束解析

doi:10.16182/j.issn1004731x.joss.201805039

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (5): 1927-1934.doi: 10.16182/j.issn1004731x.joss.201805039

激光多普勒测速测振信号处理方法的约束解析

彭翔, 刘博

中国科学院光电技术研究所,四川成都 610209

收稿日期:2016-06-23 修回日期:2016-07-26 出版日期:2018-05-08 发布日期:2019-01-03
作者简介:彭翔(1988-),男,土家族,硕士,助理研究员,研究方向为信号处理、高精度测量算法研究。
基金资助:
国家973计划(2014CB744204),国家自然科学基金(61501429),中国科学院青年创新促进会资助项目(2016335)

Bound Analysis of Signal Processing Method on Laser Doppler Velocity & Vibration Measurement

Peng Xiang, Liu Bo

Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China

Received:2016-06-23 Revised:2016-07-26 Online:2018-05-08 Published:2019-01-03

摘要/Abstract

摘要： 激光多普勒测量技术,在现代高精度测量领域中越来越受到关注和应用。对于不同的信号特性和处理方法,测量将受到不同的约束,会决定测量结果的精细度和准确度。基于激光多普勒测速测振的原理和数字信号处理的理论角度,根据信号的采样率、数据长度、时间间隔等各个输入状态形成的约束条件得到了重点分析。对二次数据采用时间间隔均匀化的处理方法,以及外差测量方式下参考光频率与信号采样频率发生混叠时对测量范围的影响也得以逐一论证。经程序仿真和实验验证,在算法推算出的测量范围内,能够快速准确地获得高精度的测量结果。

关键词: 多普勒效应, 测量分辨率, 数据间隔均匀化, 频率混叠

Abstract: Laser Doppler measurement technology has attracted more and more attention and application in the field of high precision measurement. For different signal characteristics and processing methods, there are different constraints of the measurement, which would determine the measurement precision and accuracy. Based on the principle of laser Doppler velocity & vibration measurement and from the perspective of digital signal processing, the constrains related to the sampling rate, data length and time interval are analyzed. The time-interval homogenization processing method of the second sampling data, and the effect on the measurement range of aliasing about reference light frequency and signal sampling frequency with heterodyne measurement method are also respectively studied. Experimental results show that the algorithm can obtain accurate measurement results quickly and accurately in the inferred measurement range.

Key words: Doppler effect, measurement resolution, data interval homogenization, frequency aliasing

中图分类号:

彭翔, 刘博. 激光多普勒测速测振信号处理方法的约束解析[J]. 系统仿真学报, 2018, 30(5): 1927-1934.

Peng Xiang, Liu Bo. Bound Analysis of Signal Processing Method on Laser Doppler Velocity & Vibration Measurement[J]. Journal of System Simulation, 2018, 30(5): 1927-1934.

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激光多普勒测速测振信号处理方法的约束解析

Bound Analysis of Signal Processing Method on Laser Doppler Velocity & Vibration Measurement

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