南京航空航天大学学报（英文版）2005，Vol.22Issue(2)：132-138,7.
基于天文观测技术的惯性导航系统的空中对准
IN-FLIGHT ALIGNMENT OF INERTIAL NAVIGATION SYSTEM BY CELESTIAL OBSERVATION TECHNIQUE
阿里·捷木思 1房建成1
作者信息
- 1. 北京航空航天大学仪器科学与光电工程学院,北京,100083,中国
- 折叠
摘要
Abstract
This paper presents an in-flight alignment technique for a strapdown inertial navigation system (SINS) and employs a star pattern recognition procedure for identifying stars sensed by a CCD electrooptical star sensor. Collinearity equations are used to estimate sensor frame star coordinates and the conventional least square differ-ential correction method is used to estimate the unknown orientation angles. A comparison of this attitude with the attitude estimated by the SINS provides axis misalignment angles. Simulations using a Kalman filter are carried out for an SINS and the system employs a local level navigation frame. The space stabilized SINS is discussed in conjunction with the celestial aiding. Based on the observation of the Kalman filter, the estimating and compensating gyro errors, as well as the position and velocity errors caused by the SINS misalignments are calibrated by celestial attitute information.关键词
空中对准/惯性导航/天文导航/陀螺漂移/卡尔曼滤波Key words
in-flight alignment/inertial navigation/celestial navigation/gyro drift/Kalman filtering分类
交通工程引用本文复制引用
阿里·捷木思,房建成..基于天文观测技术的惯性导航系统的空中对准[J].南京航空航天大学学报（英文版）,2005,22(2):132-138,7.
