On the interoperability of IGS products for precise point positioning with ambiguity resolution

Simon Banville, Jianghui Geng, Sylvain Loyer, Stefan Schaer, Tim Springer, Sebastian Strasser

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Techniques enabling precise point positioning with ambiguity resolution (PPP-AR) were developed over a decade ago. Several analysis centers of the International GNSS Service (IGS) have implemented such strategies into their software packages and are generating (experimental) PPP-AR products including satellite clock and bias corrections. While the IGS combines individual orbit and clock products as standard to provide a more reliable solution, interoperability of these new PPP-AR products must be confirmed before they can be combined. As a first step, all products are transformed into a common observable-specific representation of biases. It is then confirmed that consistency is only ensured by considering both clock and bias products simultaneously. As a consequence, the satellite clock combination process currently used by the IGS must be revisited to consider not only clocks but also biases. A combination of PPP-AR products from six analysis centers over a one-week period is successfully achieved, showing that alignment of phase clocks can be achieved with millimeter precision thanks to the integer properties of the clocks. In the positioning domain, PPP-AR solutions for all products show improved longitude estimates of daily static positions by nearly 60% over float solutions. The combined products generally provide equivalent or better results than individual analysis center contributions, for both static and kinematic solutions.
Original languageEnglish
JournalJournal of geodesy
Issue number94
DOIs
Publication statusPublished - 3 Jan 2020

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interoperability
GNSS
Interoperability
ambiguity
positioning
Clocks
clocks
products
Satellites
floats
product
services
Software packages
longitude
Kinematics
Orbits
integers
kinematics
alignment
computer programs

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On the interoperability of IGS products for precise point positioning with ambiguity resolution. / Banville, Simon; Geng, Jianghui; Loyer, Sylvain; Schaer, Stefan; Springer, Tim; Strasser, Sebastian.

In: Journal of geodesy, No. 94, 03.01.2020.

Research output: Contribution to journalArticleResearchpeer-review

Banville, Simon ; Geng, Jianghui ; Loyer, Sylvain ; Schaer, Stefan ; Springer, Tim ; Strasser, Sebastian. / On the interoperability of IGS products for precise point positioning with ambiguity resolution. In: Journal of geodesy. 2020 ; No. 94.
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