全球定位系统2012，Vol.37Issue(4)：22-26,5.
基于AR模型的GPS精密卫星钟差建模与预报
Modeling and Prediction of GPS Precise Satellite Clock Bias based on AR Model
摘要
Abstract
In the prediction of GPS precise satellite clock bias,quadratic term fitting model on the prediction of the short cycle and grey model on the prediction of the long term is usually used.But the trend item in the two models without taking the random item into account is just considered.A model of the random item of the clock bias with the AR model is built,and is added to the quadratic term fitting model and gray model to improve the short and the long cycle prediction of the clock bias model as a random compensation.In addition,a prediction in the computational example with the precise clock bias provided by IGS is presented.The result shows that the improved model makes the prediction of the precise satellite clock bias better to a certain extent.关键词
卫星钟差预报/随机项建模/AR模型Key words
Satellite clock correction forecasts/random item model/the AR model分类
天文与地球科学引用本文复制引用
李长会,刘宁,李森,闫国锋..基于AR模型的GPS精密卫星钟差建模与预报[J].全球定位系统,2012,37(4):22-26,5.
