灰色模型用于卫星钟差长期预报的性能研究  

Study on Performance of Gray System Model for the Satellite Clock Error Secular Prediction

作　　者：朱陵凤[1] 韩春好 李超[1] 

机构地区：[1]61081部队

出　　处：《天文研究与技术》2007年第3期226-230,共5页Astronomical Research & Technology

摘　　要：利用灰色模型对GPSRb钟和Cs钟进行了长期预报,并与常用的二阶多项式模型预报进行比较,结果表明:灰色模型对GPSCs钟进行长期210d(天)预报时精度高达ns量级,对GPSRb钟的预报精度在10ns量级,明显高于二阶多项式模型的预报精度,满足实际应用中的精度要求。Gray system model is used in secular predicting GPS Cs clock error and Rb clock error, compared with quadratic polynomial model. Calculating results show that in the secular term （210 days） predicting GPS Cs clock error precision of gray system model is up to ns, and GPS Rb clock error precision of gray system model is up to 10ns, which exceeds quadratic polynomial model obviously and satisfies precision requirements in the real application.

关 键 词：灰色模型 二次多项式 卫星钟差 预报 

分 类 号：P127[天文地球—天体测量]