摘要
为发展小卫星 ,需要研制成本低、小而轻又能满足精度的姿态测量系统。论述了利用全球定位系统 ( GPS)载波相位观测值进行姿态测量的原理 ,介绍了航天器姿态测量软件 THADS的算法和软件设计。在软件设计时 ,采用了周跳和粗差判定的改进方法 ,编制了相应的模块 ,结合地面实验数据进行仿真计算 ,在 1m左右的基线上姿态均方差小于0 .4°。结果表明利用
Small satellites need small, light, cheap and precise attitude determination systems. This paper discusses fundamental principle of attitude determination using the global positioning system (GPS) differential phase measurements. An algorithm is developed for solution processing and the design of THADS software is designed for attitude determination. The special need of spacecraft oriented applications reguire an improved algorithm for detecting cycle slips and gross biases. The simulation result based on ground test data shows that the erro of the attitude calculation was less than 0.4° with a 1 m baseline. Attitude determination using GPS differential phase measurement will be used in the future spacecraft.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2000年第6期99-102,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金项目 !( 4 98710 65 )
关键词
姿态测量
全球定位系统
GPS
航天器
软件设计
attitude determination
global positioning system (GPS)
carry phase
Kalman filter
