钟差辅助故障卫星检测算法研究  

Algorithm for faulty satellite detection augmented with receiver clock bias

作　　者：滕云龙[1,2] 师奕兵[1] 郑植[2] 

机构地区：[1]电子科技大学自动化工程学院,成都610054 [2]电子科技大学电子科学技术研究院,成都610054

出　　处：《振动与冲击》2011年第6期41-43,66,共4页Journal of Vibration and Shock

基　　金：航空科学基金(20090580013)

摘　　要：为了提高钟差预测模型辅助故障卫星检测的效果,从非线性时间序列的角度对钟差序列进行探讨,提出了基于灰色理论和马尔可夫链的钟差组合预测模型。给出了新模型的基本思想和具体实现步骤,然后将基于该模型的钟差预测值引入到接收机中辅助进行故障卫星检测。最后,应用实测数据,验证了新方法的可行性与有效性。对故障卫星检测问题的解决提供了新的思路,可以作为提高GPS接收机定位精度以及可靠性等工程应用的参考。To augment the performance of faulty satellite detection aided by receiver clock bias（RCB）,from the view point of nonlinear time sequence,a combined model for predicting RCB based on grey system theory and Markov chain was proposed.The basic ideas and steps of the forecasting method were discussed,and then the model was introduced into GPS receiver in order to detect faulty satellite.Test results were presented to demonstrate the feasibility and validity of the method.The research results pave the way for detecting faulty satellite,and are valuable in the project application for improving the positioning precision and reliability of GPS receivers.

关 键 词：接收机钟差 灰色理论 马尔可夫链 故障检测 

分 类 号：TN96[电子电信—信号与信息处理]