Title :
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
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;
Conference_Titel :
2009 International Conference on Signal Processing Systems
Conference_Location :
Singapore
Print_ISBN :
978-0-7695-3654-5
DOI :
10.1109/ICSPS.2009.20
