摘要
为了能够对相位调制激光多普勒频移测量方法进行定量分析以及优化设计,使其在实际应用中获得最佳测量结果,从该多普勒频移测量方法的工作原理出发,对其测量误差分布规律进行了理论与实验研究,建立了该方法的测量误差模型。并利用该模型对此测量方法的频移测量精度等方面受相位调制频率和相位调制深度的影响进行了理论研究,发现当相位调制频率为Fabry-Perot干涉仪透射率曲线半峰全宽的0.63倍以及相位调制深度为1.08时,该方法的测量精度可以达到最高。
By investigating distribution regularity of measuring error theoretically and experimentally, this paper builds measuring error mode of phase modulation laser Doppler shift measuring method based on its operating principle, which can be used to quantitative analyze and optimization design of Doppler shift measuring method for acquiring optimum measuring results in practical application. This error mode is utilized to theoretically investigate the influence of phase modulation depth and frequency on its frequency shift measuring accuracy and so on. It is found that measuring accuracy can reach the maximum when phase modulation frequency is equal to 0.63 times of full width of half maximum of Fabry-Perot interferometer transmission curve and phase modulation depth is 1.08.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2014年第7期98-104,共7页
Acta Optica Sinica
基金
中央高校基本科研业务费专项基金(HIT.NSRIF.2014043)
关键词
物理光学
遥感
多普勒频移
相位调制
拍频
physical optics
remote sensing
Doppler shift
phase-modulating
beat frequency
