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政大典藏 > College of Social Science > Department of Land Economics > Periodical Articles > Item 140.119/65511

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/65511

Title:	A Simulation of the Effect of GPS Pseudolite Observations on the Obstructed Sky View
Authors:	甯方璽;高書屏;張嘉強 Ning, Fang-Shii;Kao, Szu-Pyng;Chang, Chia-Chyang;Meng, Xiao-Lin
Contributors:	地政系
Keywords:	GPS;PSEUDOLITE;OBSTRUCTED SKY;POSITIONING;PRECISION
Date:	2007.01
Issue Date:	2014-04-18 17:10:28 (UTC+8)
Abstract:	GPS has been used in positioning and navigation for decades. However, there are still many unsolved problems existing, for instance the degradation of positioning precision when the view of sky is obstructed. Pseudolite, a ground-based GPS satellite-like signal transmitter, can provide extra measurements in order to improve the positioning precision from GPS alone in the obstructed areas. In this study, pseudolite data were collected to tackle the obstruction of GPS satellite signals, and to evaluate the effectiveness of the GPS pseudolite. The results of this study demonstrated that the pseudolite observations reduced the effect of dilution of precision (DOP) by more than 35% and positioning precision by 40%, and with the addition of extra measurements it made 1cm positioning possible even in the obstructed areas.
Relation:	Survey Review, 39(303), 34-42
Data Type:	article
DOI link:	http://dx.doi.org/10.1179/003962607X164970
DOI:	10.1179/003962607X164970
Appears in Collections:	[Department of Land Economics] Periodical Articles

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