A User Range Accuracy Estimation Method of the Global Navigation Satellite System

An Analytic estimation method （AEM） which has less execution time is proposed to calculate the User range accuracy （URA） used by the user to detect the integrity potential risk. It shows that the most important thing of computing URA is to find the maximum error vector in the error vector space. By...

Full description

Saved in:
Bibliographic Details
Published in:电子学报：英文版 2014, Vol.23 (1), p.194-198
Main Author: ZHAO Ruibin LI Rui HUANG Zhigang SHAO Bo
Format: Article
Language:English
Subjects:
EM算法
全球导航卫星系统
向量空间
执行时间
最大误差
用户
精度
评估方法
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An Analytic estimation method （AEM） which has less execution time is proposed to calculate the User range accuracy （URA） used by the user to detect the integrity potential risk. It shows that the most important thing of computing URA is to find the maximum error vector in the error vector space. By using the covariance matrix of the error vector, the searching of the maximum error vector is converted to an analytic geometry problem. The value of the maximum error vector can be obtained di- rectly by mathematical derivation. Experiments are made to compare the performance between the proposed AEM algorithm and the Exhaustive grid search （EGS） method. The related results show that the AEM algorithm can re- duce more than 92% of execution time. This algorithm is more suitable for computing URA at the Master control station （MCS） for the engineering applications.
ISSN:1022-4653