Abstract

In this paper, an accurate measurement method of multiple spots’ position offsets on a four-quadrant detector is proposed for a distributed aperture laser angle measurement system (DALAMS). The theoretical model is put forward, as well as the corresponding calculation method. This method includes two steps. First, as the initial estimation, integral approximation is applied to fit the distributed spots’ offset function; second, the Boltzmann function is employed to compensate for the estimation error to improve detection accuracy. The simulation results attest to the correctness and effectiveness of the proposed method, and tolerance synthesis analysis of DALAMS is conducted to determine the maximum uncertainties of manufacturing and installation. The maximum angle error is less than 0.08° in the prototype distributed measurement system, which shows the stability and robustness for prospective applications.

© 2017 Optical Society of America

Large field distributed aperture laser semiactive angle measurement system design with imaging fiber bundles

Chunyun Xu, Haobo Cheng, Yunpeng Feng, and Xiaoli Jing
Appl. Opt. 55(25) 7000-7008 (2016)

Improved measurement accuracy of spot position on an InGaAs quadrant detector

Jiabin Wu, Yunshan Chen, Shijie Gao, Yimang Li, and Zhiyong Wu
Appl. Opt. 54(27) 8049-8054 (2015)

High-precision laser spot center positioning method for weak light conditions

Ruihong Gao, Heshan Liu, Ya Zhao, Ziren Luo, and Gang Jin
Appl. Opt. 59(6) 1763-1768 (2020)

Relative positioning method for near-field beam spot array with optical microscope image of lithographic patterns using linear regression

Seonghyeon Oh, Jinhee Jang, and Jae W. Hahn
Appl. Opt. 56(5) 1346-1352 (2017)

Measurement of surface position by focusing an interference pattern of multiple apertures with a confocal system

Santiago Rueda and Yobani Mejía
Appl. Opt. 57(3) 498-506 (2018)