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

页码：21929 / 21945

页数：17