摘要
为了提高卫星钟差预报的精度,提出利用灰色模型预报GLONASS卫星钟差的方法。灰色模型通过少量的基础数据建立模型、预报卫星钟差,并能在保证精度的前提下,提高卫星钟差的预报速度,为未来高精度自主导航定位提供可能;利用灰色模型设计了3种方案预报GLONASS卫星的精密钟差,预报结果与GLONASS精密钟差数据进行比较分析。结果验证了灰色模型在GLONASS卫星钟差预报中的可行性;并且表明卫星钟的种类、稳定性对钟差预报有一定的影响。
In order to improve the prediction accuracy of satellite clock error, the paper proposed the gray model to predict GLONASS satellite error. The grey model could use a small number of basic data to establish a prediction model of satellite clock error, and speed up the prediction of the satellite clock error with good accuracy, which would provide the potential for high-precise autonomous navigation and positioning. Finally, three schemes were designed to predict the precise clock error of GLONASS by using grey model, and the prediction result was comparatively analyzed with the GLONASS precise clock error data. Result showed that the GM（1, 1） model could be feasible in predicting GLONASS satellite clock error, and the type and stability of satellite clocks would have some influence on the clock error prediction.
作者
李超
党亚民
谷守周
LI Chao DANG Yamin GU Shouzhou(Surveying and Mapping Institute, Shandong University of Science and Technology, Qingdao, Shandong 266000, China China Academy of Surveying and Mapping, Beijing 100830, China)
出处
《导航定位学报》
2016年第4期24-29,35,共7页
Journal of Navigation and Positioning
基金
国家重点研发计划课题(2016YFB0501801
2016YFB0502105)
iGMAS分析中心建设与运行维护项目(GFZX0301040308-06)
国家"863"计划项目(2015AA124001)
国家自然科学基金项目(41406115)
中国测绘科学研究院基本科研业务费项目(7771604)
作者简介
李超（1991～），女，硕士，研究方向为卫星导航系统实时钟差分析与研究。
