Journal ArticleDOI
Uncovering common misconceptions in GNSS Precise Point Positioning and its future prospect
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TLDR
An overview of the current performance of PPP is provided as well as attempt to address some of the common misconceptions of this positioning technique—considered by many as the future of satellite positioning and navigation.Abstract:
Within the last decade, GNSS Precise Point Positioning (PPP) has generated unprecedented interest among the GNSS community and is being used for a number of scientific and commercial applications today. Similar to the conventional relative positioning technique, PPP could provide positioning solutions at centimeter-level precision by making use of the precise carrier phase measurements and high-accuracy satellite orbits and clock corrections provided by, for example, the International GNSS Service. The PPP technique is attractive as it is computationally efficient; it eliminates the need for simultaneous observations at both the reference and rover receivers; it also eliminates the needs for the rover receiver to operate within the vicinity of the reference receiver; and it provides homogenous positioning quality within a consistent global frame anywhere in the world with a single GNSS receiver. Although PPP has definite advantages for many applications, its merits and widespread adoption are significantly limited by the long convergence time, which restricts the use of the PPP technique for many real-time GNSS applications. We provide an overview of the current performance of PPP as well as attempt to address some of the common misconceptions of this positioning technique--considered by many as the future of satellite positioning and navigation. Given the upcoming modernization and deployment of GNSS satellites over the next few years, it would be appropriate to address the potential impacts of these signals and constellations on the future prospect of PPP.read more
Citations
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Journal ArticleDOI
Quality assessment of multi-GNSS orbits and clocks for real-time precise point positioning
TL;DR: A comprehensive evaluation of the availability and the quality of multi-GNSS real-time orbit and clock products is provided through the comparison to the final Center for Orbit Determination in Europe (CODE) orbits, fitting long continuous orbital arcs, as well as the assessment of clock stability using modified Allan deviation diagrams.
Journal ArticleDOI
Multi-GNSS high-rate RTK, PPP and novel direct phase observation processing method: application to precise dynamic displacement detection
Journal ArticleDOI
Real-Time Precise Point Positioning (RTPPP) with raw observations and its application in real-time regional ionospheric VTEC modeling
TL;DR: Results show that slant ionospheric delays from RTPPP are more precise and have a much better convergence performance than those from the CCL method in real-time processing.
Journal ArticleDOI
Initial Assessment of the LEO Based Navigation Signal Augmentation System from Luojia-1A Satellite.
Lei Wang,Ruizhi Chen,Deren Li,Guo Zhang,Xin Shen,Baoguo Yu,Cailun Wu,Song Xie,Peng Zhang,Ming Li,Yuanjin Pan +10 more
TL;DR: The Luojia-1A Navigation augmentation system is capable of providing useable LEO navigation augmentation signals with the empirical user equivalent ranging error (UERE) no worse than 3.6 m, which can be integrated with existing GNSS to improve the real-time navigation performance.
Journal ArticleDOI
PPPH: a MATLAB-based software for multi-GNSS precise point positioning analysis
Berkay Bahadur,Metin Nohutcu +1 more
TL;DR: A MATLAB-based GNSS analysis software that is easy to use, has a robust performance and is open to progress with its modular structure is introduced, named PPPH.
References
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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.
Journal ArticleDOI
Resolution of GPS carrier-phase ambiguities in Precise Point Positioning (PPP) with daily observations
TL;DR: It is shown that UPDs are rather stable in time and space, and can be estimated with high accuracy and reliability through a statistical analysis of the ambiguities estimated from a reference network.
A guide to using international gnss service (igs) products
TL;DR: The International GNSS Service (IGS) provides precise GPS orbit products to the geodetic community with increased precision and timeliness as mentioned in this paper, which can be used to estimate the user position relative to one or multiple reference stations, using differenced carr ier phase observations and a baseline or network estimation approach.
Journal ArticleDOI
Single receiver phase ambiguity resolution with GPS data
Willy Bertiger,Shailen D. Desai,Bruce J. Haines,Nate Harvey,Angelyn Moore,Susan Owen,Jan P. Weiss +6 more
TL;DR: This work presents an ambiguity resolution algorithm that improves solution accuracy for single receiver point-positioning users and constrain (rather than fix) linear combinations of local phase biases to improve compatibility with global phase bias estimates.
Journal ArticleDOI
Integer Ambiguity Resolution on Undifferenced GPS Phase Measurements and Its Application to PPP and Satellite Precise Orbit Determination
TL;DR: In this paper, the authors proposed a new method for fixing dual-frequency GPS ambiguities on undifferenced phase measurements either locally or globally, which can be used for precise point positioning of ground-based receivers and for precise orbit determination of low Earth orbiting satellites.