Self-Collimation for Two-Dimensional Micro-Angle Measurement in Space  

作　　者：REN Wenjia LIU Jin YANG Haima HUANG Bo JIAN Yumei 

机构地区：[1]School of Electronic and Electrical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China [2]College of Optoelectronic Information and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China

出　　处：《Wuhan University Journal of Natural Sciences》2021年第2期156-164,共9页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (61701296, U1831133);the Natural Science Foundation of Shanghai (17ZR1443500);the Shanghai Aerospace Science and Engineering Fund (SAST2017-062)。

摘　　要：How to measure the two-dimensional attitude angle of space target and achieve stable tracking and aiming has become an important problem. The self-collimation is often measured via one-dimensional motion of the object in space. This paper proposes a micro-angle measurement system based on self-collimation to obtain the two-dimensional angle information of moving objects in space, and a thrice reflecting optical path structure is built to improve the compactness of the system. First, by establishing a posture angle measurement and decomposition model, the two-dimensional deflection angle value of the reflecting mirror is derived from the rotation angle equation;Second, the self-collimating measurement process is simulated to show the relationship between the reflecting mirror rotation angle and the imaging spot distortion of detector;Third, a two-dimensional micro-angle experimental platform is established based on the Position Sensitive Detector(PSD). Finally, nonlinear error of PSD is improved by the cubic spline interpolation method. The case results show a 15% reduction in the angle error.

关 键 词：SELF-COLLIMATION micro-angle measurement Position Sensitive Detector(PSD) cubic spline interpolation 

分 类 号：TN247[电子电信—物理电子学]