Research on the algorithm of on-orbit calibration based on gyro/star-sensor

被引：0

作者：

Wang, Peng ^{[1
]}

Zhang, Ying-Chun ^{[1
]}

Qiang, Wen-Yi ^{[1
]}

机构：

[1] Harbin Inst Technol, Res Ctr Satellite Technol, Harbin 150080, Peoples R China

来源：

PROCEEDINGS OF 2006 INTERNATIONAL CONFERENCE ON MACHINE LEARNING AND CYBERNETICS, VOLS 1-7 | 2006年

关键词：

on-orbit calibration; linearize; extended Kalman filter; modified rodriguesparameters;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In order to control satellites maneuver accurately from one attitude to another, onboard rate sensing gyro usually need be calibrated again after launch. A new on-orbit calibration algorithm is proposed to correct the drift errors of the gyro based on Star-Sensor in this paper. Firstly, the exact dynamic and kinematic models of the gyro are built by error analysis. Then the error model is linearized under reasonable condition, and the state equation of system is educed in detail. The information of attitude Modified Rodrigues Parameters measured by Star-Sensor in real time is used to calibrate the installation error and the calibration error based on the extended Kalman filter. The numerical simulation results show that the new method is effective practically to improve the navigation precision, longevity of gyro effectively and to provide better reliability and adaptability.

引用

页码：303 / +

页数：2

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