Dynamic cascade-model-based frequency-scanning interferometry for real-time and rapid absolute optical ranging

被引：35
作者：
Deng, Zhongwen [1 ]
Liu, Zhigang [1 ]
Jia, Xingyu [1 ]
Deng, Wen [1 ]
Zhang, Xin [1 ]
机构：
[1] Xi An Jiao Tong Univ, Minist Educ, Key Lab Modern Design & Rotor Bearing Syst, Xian 710049, Shaanxi, Peoples R China
来源：
OPTICS EXPRESS | 2019年 / 27卷 / 15期
基金：
中国国家自然科学基金;
关键词：
DISTANCE MEASUREMENT SYSTEM; SWEEPING INTERFEROMETRY; KALMAN FILTER; PRECISION; IMPROVEMENT; ACCURACY; ERRORS;
D O I：
10.1364/OE.27.021929
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A new frequency-scanning interferometry (FSI) scheme using in-phase and quadrature (IQ) detection for real-time and rapid absolute optical ranging is presented. Dynamic measurement with FSI modulates interference signal frequency by both target movement and time-varying optical-frequency scanning rate; hence, a dynamic model is proposed to decouple dynamic absolute distance from the instantaneous frequency of interference signals. The unscented Kalman filter and particle filter algorithms are implemented for the nonlinear first-layer and non-Gaussian second-layer models, respectively. The proposed FSI scheme eliminates nonlinear optical-frequency scanning effects in dynamic measurements and realizes real-time measurement only current observed data are used. Experimental results verify high tracking performance for a vibrating target with approximately 10 mu m amplitude and 50-500 Hz frequency. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：21929 / 21945
页数：17
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