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標題: A simulation of the effect of GPS pseudolite observations on the obstructed sky view
作者: Ning, F.S.
Kao, S.P.
Chang, C.C.
Meng, X.L.
關鍵字: GPS;pseudolite;obstructed sky;positioning;precision
Project: Survey Review
期刊/報告no:: Survey Review, Volume 39, Issue 303, Page(s) 34-42.
GPS has been being 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 of GPS system 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 improved the dilution of precision (DOP) by more than 35% and positioning precision by 40%, and with the addition of extra measurements it made l cm positioning possible even in the obstructed areas.
ISSN: 0039-6265
DOI: 10.1179/003962607x164970
Appears in Collections:期刊論文

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