传感技术学报2018，Vol.31Issue(1)：152-157,6.DOI:10.3969/j.issn.1004-1699.2018.01.025
面向皮纳卫星姿态确定的MEMS陀螺 磁强计组合滤波系统
MEMS Gyro and Magnetometer Based Attitude Determination System for Pico and Nano-Satellites
摘要
Abstract
For Pico and Nano-satellites which can hardly configure high-precision attitude sensors,the sensor combi-nation of MEMS gyro and magnetometer has become an important guarantee of satellite in-orbit attitude measurement, especially when sun-sensor is not available. Based on this low-cost,all-orbit,all day,and minimum sensor combina-tion,a filter system was proposed suitable for on-orbit operation. In this system,a sliding window ARMA modeling is used to reduce the gyro random noise,and the gyro bias is removed online by the attitude filter to ensure the long-term validity of the mathematical model. Based on the on-board sensors and algorithms of ZDPS-2 satellite,and combined with the on-orbit data,the simulation results show that the proposed filter system can effectively reduce the random noise of gyro,and the suppression ratio is more than 50％. The accuracy of gyro bias estimation is improved by 310％, reaching 0.001 °/s,and the accuracy of attitude estimation is improved by 190％to 1.2127°. The proposed system can be a useful exploration and a practical design for Pico and Nano-satellite attitude determination.关键词
在轨滤波系统/姿态确定/ARMA建模/MEMS陀螺/磁强计Key words
on-orbit filter system/attitude determination/ARMA/MEMS gyro/magnetometer分类
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杜超禹,蒙涛,金仲和..面向皮纳卫星姿态确定的MEMS陀螺 磁强计组合滤波系统[J].传感技术学报,2018,31(1):152-157,6.基金项目
项目来源:国家自然科学基金项目( 61525403,61503334) （ 61525403,61503334）
