The Precise Research on Stellar Horizon Atmospheric Refraction Model
The Stellar Horizon Atmospheric Refraction concept is considered to be one of the most promising concepts for satellite autonomous navigation. However,the precision of the method is limited by the uncertainty of the model of stellar horizon atmospheric refraction. According to the rule that atmospheric density would vary with altitude,latitude,season and so on,the measurement model can be effectively improved, and then the precision of the satellite autonomous navigation and the dependability can be improved as well. By thoroughly studying on the principle of the atmospheric refraction,the data of stratospheric atmosphere, the atmospheric model and other factors related with the precision of the measurement model, a self-adapted continuous measurement model (20-50 km) was established, and the system model with the orbit perturbation was established at the same time. Then a simulation testing was performed using the Unscented Kalman Filter,and finally an error cause was analyzed.
Aircraft Navigation Refraction Measurement Model Orbit Perturbation
Hu Jing Yang Bo
School of Astronautics, Beijing University of Aeronautics and Astronautics,Beijing 100083,China
国际会议
The 11th International Space Conference of Pacific-basin Societies(第11届环太平洋国际航天会议)
北京
英文
192-199
2007-05-16(万方平台首次上网日期,不代表论文的发表时间)