A Weighted Model for Improving the Positioning Accuracy

Author

Jizhong Li ; Muqing Wu

Author_Institution

Sch. of Inf. & Commun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2009

fDate

15-17 May 2009

Firstpage

66

Lastpage

69

Abstract

The accuracy of global positioning system (GPS) based point determination in urban environment is mainly corrupted by multipath and signal diffraction. The measured carrier-to-noise-power-density ratio (C/N0) has proven to be an excellent tool for the estimation of the random errors of the observables. A weight model is proposed in order to scale the positioning accuracy. The influence of parameters in the model to positioning accuracy is carefully analyzed. Then these parameters are determined. As compared to the positioning solution without weight, the positioning accuracy increases by 9.85%, and 2.36% to SIGMA model.

Keywords

Global Positioning System; GPS; carrier-to-noise-power-density ratio; global positioning system; multipath diffraction; positioning accuracy analysis; signal diffraction; urban environment; weighted model; Agricultural engineering; Artificial satellites; Delay; Diffraction; Global Positioning System; Information science; Mathematical model; Mathematics; Satellite navigation systems; Signal processing; BLUE; Navigation; Weighted model;

fLanguage

English

Publisher

ieee

Conference_Titel

2009 International Conference on Signal Processing Systems

Conference_Location

Singapore

Print_ISBN

978-0-7695-3654-5

Type

conf

DOI

10.1109/ICSPS.2009.20

Filename

5166748