Journal ArticleDOI
An improved approach to model ionospheric delays for single-frequency Precise Point Positioning
TLDR
A novel approach is developed accordingly in which the deterministic representation is further refined by a stochastic process for each satellite with an empirical model for its power density, which shows significant improvements in terms of positioning accuracy and convergence time.About:
This article is published in Advances in Space Research.The article was published on 2012-06-15. It has received 100 citations till now. The article focuses on the topics: Precise Point Positioning & Stochastic process.read more
Citations
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Journal ArticleDOI
A method for improving uncalibrated phase delay estimation and ambiguity-fixing in real-time precise point positioning
TL;DR: The results indicate that the new processing scheme considering ionospheric characteristics can reduce the convergence time by about 30 % for float kinematic solutions and the observation time for a reliable ambiguity-fixing is shortened by 25 % compared to that of the traditional ambiguity-fixed kinematics solution.
Journal ArticleDOI
Multi-GNSS precise point positioning with raw single-frequency and dual-frequency measurement models
TL;DR: The multi-GNSS undifferenced PPP results have shown improvements in the convergence time by more than 60 % in both the single- and dual-frequency PPPResults, while the positioning accuracy after convergence indicates no significant improvements for the dual- frequencies of the PPP solutions, but an improvement of about 25 % on average for the one- frequencies.
Journal ArticleDOI
Multi-GNSS precise point positioning (MGPPP) using raw observations
TL;DR: In this paper, a joint processing model for multi-GNSS (GPS, GLONASS, BDS and GALILEO) precise point positioning (PPP) is proposed, in which raw code and phase observations are used.
Multi-GNSS precise point positioning with raw single-frequency and dual-frequency measurement models
TL;DR: In this article, the authors study the contributions of various GNSS combinations to PPP performance based on undifferenced or raw observations, in which the signal delays and ionospheric delays must be considered.
References
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Book
Statistics for spatial data
Noel A Cressie,Noel A Cressie +1 more
TL;DR: In this paper, the authors present a survey of statistics for spatial data in the field of geostatistics, including spatial point patterns and point patterns modeling objects, using Lattice Data and spatial models on lattices.
Journal ArticleDOI
5. Statistics for Spatial Data
Mike Rees,N. Cressie +1 more
TL;DR: Cressie et al. as discussed by the authors presented the Statistics for Spatial Data (SDS) for the first time in 1991, and used it for the purpose of statistical analysis of spatial data.
Journal ArticleDOI
Principles of geostatistics
TL;DR: In this article, the authors present a new science leading to such an approach, namely geostatistics, which is a new approach for estimating the estimation of ore grades and reserves.
Journal ArticleDOI
Precise point positioning for the efficient and robust analysis of GPS data from large networks
TL;DR: This work determines precise GPS satellite positions and clock corrections from a globally distributed network of GPS receivers, and analysis of data from hundreds to thousands of sites every day with 40-Mflop computers yields results comparable in quality to the simultaneous analysis of all data.