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一种星敏感器安装误差自动化测量方法

647    2019-02-28

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作者:陈伟雄1, 王林2, 郑涛2, 马步川2

作者单位:1. 中北大学仪器与电子学院, 山西 太原 030051;
2. 北京航天控制仪器研究所, 北京 100854


关键词:惯性/星光组合导航系统;星敏感器;安装误差标定;光电自动化测量


摘要:

针星敏感器安装误差的精确标定,该文提出基于平台式惯性/星光组合导航系统中,星敏感器相对惯性坐标基准的安装误差自动化测量方法。首先基于光电自准直仪测量方式,建立安装误差测量的数学模型,并通过仿真验证模型的有效性。开发一套自动化测试系统,利用高精度的光电测角仪模拟星光,将星敏感器主光轴对准星点,输出星点坐标信息,自准直仪测量标准六面体的姿态,通过与星敏感器坐标对比和软件自动解算得到星敏感器相对标准六面体的安装误差。试验数据能达到5″内的测试稳定精度,证明该方法可准确测量出星敏感器的安装误差,且测试稳定性好,已应用于工程精密测量。


An automatic measurement method for installation error of star sensor
CHEN Weixiong1, WANG Lin2, ZHENG Tao2, MA Buchuan2
1. School of Instrument and Electronics, North University of China, Taiyuan 030051, China;
2. Beijing Institute of Aerospace Control Devices, Beijing 100854, China
Abstract: In order to calibrate the installation error of star sensor accurately, this paper proposed an automatic measurement method for the installation error of a star sensor relative to a inertial reference in a platform-based inertial/starlight integrated navigation system. Firstly, a mathematical model of installation error measurement was established based on the measurement method of photoelectric self-collimator, and the validity of the model was verified by simulation. A set of automatic test system was developed, and a high precision photoelectric goniometer was used to simulate the star light. The star sensor's main axis was on the star point, the star point coordinates were output, and the standard hexahedron attitude was measured by the collimator. The error of the installation of the star sensor relative to the standard hexahedron was obtained by comparing with the star sensor coordinate and the software automatically. The test data can achieve 5″ internal test stability accuracy, which proves that the method can accurately measure the installation error of star sensor, and the stability of the test is good. It has been applied to the precision measurement of the engineering.
Keywords: inertial/starlight integrated navigation system;star sensor;installation error calibration;photoelectric automatic measurement
2019, 45(2):111-115  收稿日期: 2018-04-05;收到修改稿日期: 2018-05-10
基金项目:
作者简介: 陈伟雄(1994-),男,山西临汾市人,硕士研究生,专业方向为测试计量技术及仪器
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