区域网GPS卫星独立定轨的研究  

ORBIT DETERMINATION OF GPS SATELLITE USING GPS TRACKING NETWORK IN CHINA

作　　者：姜国俊[1] 朱文耀[1] 程宗颐[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《中国科学院上海天文台年刊》1999年第20期105-112,共8页Annals Shanghai Astronomical Observatory Chinese Academy of Sciences

基　　金：国家攀登项目"现代地壳运动和地球动力学研究";国家重大工程项目"中国地壳运动观测网络";国家自然科学基金重点!9633010

摘　　要：根据我国广域差分GPS系统对GPS卫星独立定轨的要求，通过对国内GPS跟踪网实测数据的处理，分析和讨论了区域网定轨的数据处理方法和可能达到的定轨精度。为了提高所定轨道的稳定性和进行实时预报的精度，通过对所定轨道的误差分析提出在轨道沿迹方向引入经验加速度计算方案。计算结果表明，采用此方法后GPS卫星的定轨精度有了显著提高。既论证了利用我国区域GPS网和广播星历进行独立定轨的可行性，也阐述了提高其轨道预报精度的方法。According to the need of Chinese WADGPS in orbit determination, the algorithms of data processing and possible reaching accuracy in orbit detendnation using the data of Chinese GPS network were discussed. Based on the error analysis from the results of orbit detendnation and prediction, which is used to check the stability of orbit and the accuracy of orbit prediction, a method of introducing empirical accelerations in along-track direction of orbit to improve the accuracy of orbit prediction has been presented. Results have shown that the method is very available. The paper not only kocuments the possibility of precise orbit detendnation using broadcast ephemeris and the data of Chinese GPS network but also provides the way of improving orbit prediction accuracy.

关 键 词：全球定位系统 GPS系统 区域网 误差分析 定轨精度 

分 类 号：P173.1[天文地球—天文学]