影响因子：1.1
发表刊物：Electronics Letters
摘要：In Global Navigation Satellite System (GNSS) community, pseudorange observables, without integer ambiguity, have large measurement noise, while carrier phase observables, with high measurement accuracy, have integer ambiguity, which restricts the direct use either of them for high-accuracy navigation and positioning. In this regard, fusing pseudorange and ambiguity-free time-differenced carrier phase (TDCP) is a popular data processing technique. In this Letter, the least-squares fusion is studied. A theoretical analysis of the steady performance of this fusion is conducted. A set of formulas of the steady performance is derived, based on which simulations are carried out for different pseudorange-carrier-phase precision ratios. Results showed that the steady accuracy of fusion pseudorange is about two orders of magnitude higher than that of the original pseudorange, and is close to that of carrier phase observables. Besides, the convergence speed and the comparison to the Hatch filter are also checked in the simulations.
论文类型：期刊论文
学科门类：工学
一级学科：测绘科学与技术
文献类型：J
卷号：55
期号：23
页面范围：1238-1241
是否译文：否
发表时间：2019-11-14
收录刊物：SCI
发布期刊链接：https://doi.org/10.1049/el.2019.2408