Cosine functions of GPS carrier phases for parameter estimation

NCU Institutional Repository > 研究中心 > 太空及遙測研究中心 > 期刊論文 > Item 987654321/27677

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题名:	Cosine functions of GPS carrier phases for parameter estimation
作者:	Wu,J;Yiu,FG
贡献者:	太空及遙測研究中心
关键词:	GLOBAL POSITIONING SYSTEM;AMBIGUITY
日期:	1997
上传时间:	2010-06-29 18:52:00 (UTC+8)
出版者:	中央大學
摘要:	Ambiguity function methods are based on the magnitude of the sum of unit vectors (phasors) defined by differences between observed and calculated global positioning system (GPS) phase data, thereby eliminating integer ambiguity parameters. In a novel approach using only cosines of the carrier phases, least squares techniques are implemented to facilitate convergence from approximate positions to a true position. With dual-frequency phase measurements, a simultaneous estimation of residual ionospheric path delays is proven feasible. Accuracy analyses show centimeter-level root mean square errors for both static and kinematic satellite positionings. Although the approach is not affected by cycle slips, its Limitation on position approximation deserves more attention. Together with L1/L2 phase measurements from wide-area tracking or monitoring stations, a potential application for single-frequency GPS users is briefly described.
關聯:	JOURNAL OF SURVEYING ENGINEERING-ASCE
显示于类别:	[太空及遙測研究中心] 期刊論文

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