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星敏感器内参数标定误差研究

Research on the Calibration Errors of Star Sensor Intrinsic Parameters

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摘要

星敏感器是一种高精度姿态测量设备,被广泛应用于航天、航空、舰船等领域,其性能主要取决于内参数的标定精度。选用何种标定方法完成内参数的标定以及如何提高内参数的标定精度是星敏感器实现高精度姿态测量的关键。针对现有的依赖姿态解算的标定方法与不依赖姿态解算的标定方法进行了相应研究,通过采用网格状星图分析了两类标定方法的噪声特性,同时对比研究了两类标定方法在不同星点数目、不同星点分布下的标定情况。仿真结果表明:星点数目越多内参数的标定精度越高,星点分布越均匀内参数的标定精度越高,且在同等情况下依赖姿态解算的标定方法的精度要优于不依赖姿态解算的标定方法。

Abstract

Star sensor is a high-precision attitude measuring device, which is widely used in aerospace, aviation, ship and other fields. Its performance depends mainly on the calibration accuracy of internal parameters. Therefore, how to choose the calibration method to complete the calibration of internal parameters and how to improve the calibration accuracy of internal parameters is the key of star sensor to achieve high-precision attitude measurement. The calibration methods based on attitude solution or not are researched in this paper. The noise characteristics of the two calibration methods are analyzed by using a grid star map, and the two calibration methods under different star number and different star distribution are compared. The simulation results show that the more the number of star points, the higher the calibration accuracy of the internal parameters, the more uniform distribution of star pointis, the higher the calibration accuracy of the internal parametersis. In the same case, the accuracy of the calibration method depending on attitude calculation is better than that of not depending on attitude calculation.

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中图分类号:V241.62+3

所属栏目:光电导航

基金项目:国家自然科学基金(61573368)资助项目

收稿日期:2017-05-20

修改稿日期:2017-08-01

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作者单位    点击查看

刘宇:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
戴东凯:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
伏思华:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
马丽衡:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
王省书:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073

联系人作者:刘宇(842129443@qq.com)

备注:刘宇(1992-),男,硕士硕究生,主要从事星敏感器方面的研究工作。

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引用该论文

LIU Yu,DAI Dong-kai,FU Si-hua,MA Li-heng,WANG Xing-shu. Research on the Calibration Errors of Star Sensor Intrinsic Parameters[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2017, 15(6): 77-83

刘宇,戴东凯,伏思华,马丽衡,王省书. 星敏感器内参数标定误差研究[J]. 光学与光电技术, 2017, 15(6): 77-83

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