In order to improve satellite clock error prediction precision,an optimum method based on polynomial model is proposed in this paper.By adjusting the amount of satellite clock data and the rank of polynomial model,different length predicting precision of satellite clock error are improved.To validate the feasibility and effectiveness of this method,this paper analyzes the predicting precision of satellite clock error through the statistics of COMPASS satellite clock error.The analysis shows the satellite clock error prediction precision can be improved,when the amount of satellite clock data and the rank of polynomial model are all optimized.%为了解决导航卫星钟差预报精度随时间不断衰减问题,提出了基于多项式的卫星钟差预报模型优化方法.该方法通过优化预报采用的数据资料长度和多项式模型阶次,实现了高精度的卫星钟差短/中/长期预报.为验证该方法的可行性和有效性,利用实测的COMPASS导航卫星钟差数据进行钟差预报精度分析.结果表明,当多项式模型满足资料长度和模型阶次的最佳配置时,可有效解决导航卫星钟差预报精度随时间不断衰减的问题.
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