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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50045

Authors: Joz Wu
Shiou-Gwo Lin
Fong-Gee Yiu
Contributors: 國立臺灣海洋大學:通訊與導航工程學系
Keywords: integer ambiguity
phase cosine function
ionospheric estimation
positioning accuracy
Date: 1997
Issue Date: 2018-09-13T03:27:04Z
Publisher: Journal of the Chinese Institute of Engineers
Abstract: ABSTRACT: For high-precision GPS satellite positioning, two search algorithms are compared in this paper. One algorithm, which is based on an approach for resolving phase ambiguities, uses a least-squares search technique. The other algorithm is related to an ambiguity function method but differs from it in that the final positional convergence is achieved by employing the same least-squares technique. The search for a true position solution is conducted either in phase ambiguity space or in three-dimensional geometric space. The two algorithms are tested, using both single- and dual-frequency carrier phase measurements. The former phase processing is susceptible to cycle slips, but the latter has relatively small convergence ranges. Methodological performance for both rapid static and kinematic GPS positioning experiments is analyzed, leading not only to centimeter-level, but also comparable position solutions for short-range baselines. The algorithms can fulfil supportive functions, which increases the reliability of the GPS-based point determination.
Relation: 20(6) pp.643-650
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50045
Appears in Collections:[通訊與導航工程學系] 期刊論文

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