Analysis of positioning errors in radionavigation systems

Author

Shin, Dong-Ho ; Sung, Tae-Kyung

Author_Institution

Dept. of Electr. Eng., Chung Nam Nat. Univ., Taejon, South Korea

fYear

2001

fDate

2001

Firstpage

156

Lastpage

159

Abstract

This paper presents the comparisons of error characteristics between time of arrival (TOA) and time difference of arrival (TDOA), especially the relationship between position estimates and their error covariance. The errors of pseudorange measurements are considered as weighted or correlated due to the constellations of satellite and environment of a user. It is analytically demonstrated that the error covariance matrix and position estimates for TDOA are the same as those for TOA.. It also shows that the error covariance for TDOA does not change regardless of any single difference operator

Keywords

covariance matrices; error analysis; radionavigation; TDOA; TOA; arrival time difference; correlated errors; error characteristics; error covariance; error covariance matrix; position estimates; positioning error analysis; pseudorange measurement errors; radionavigation systems; satellite constellations; weighted errors; Error analysis; Global Positioning System; Intelligent vehicles; Least squares methods; Position measurement; Radio navigation; Satellite broadcasting; Time difference of arrival; Time measurement; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Transportation Systems, 2001. Proceedings. 2001 IEEE

Conference_Location

Oakland, CA

Print_ISBN

0-7803-7194-1

Type

conf

DOI

10.1109/ITSC.2001.948647

Filename

948647