Publication detail

Acceleration of PPP Integer Ambiguity Resolution When Emploing Ionospheric Delays

NOSEK, J. VÁCLAVOVIC, P. ZHAO, L. DOUŠA, J.

Original Title

Acceleration of PPP Integer Ambiguity Resolution When Emploing Ionospheric Delays

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

Precise Point Positioning (PPP) is a powerful method for GNSS data processing, when observations from only one receiver are utilized. Since any systematic error is not eliminated by between-stations differencing, introduced precise products and models are crucial for precise positioning. While precise satellite orbits and clocks corrections are essential for traditional float PPP, satellite phase biases are required for integer ambiguity resolution (PPP-AR). When considering also local ionospheric and tropospheric parameters, the integer ambiguity resolution is achievable very fast, which helps to reduce the initial convergence significantly. When exploiting such precise atmospheric corrections, the solution can be considered an alternative for the popular Real Time Kinematic (RTK) method. Therefore, the solution is usually abbreviated by PPP-RTK. We processed daily GNSS data from EUREF Permanent Network (EPN) using PPP, PPP-AR, and PPP-RTK. The tropospheric delay was not introduced as a product but estimated together with other parameters. The assessment of the convergence time has shown a significant benefit of the resolved integer ambiguities. The average time to reach 10 cm horizontal accuracy was 22, 11, and 7 min when processing in PPP, PPP-AR, and PPP-RTK mode, respectively. The first fixed epoch was obtained after 10 and 2 minutes in the case of PPP-AR and PPP-RTK, respectively. The accuracy assessment of Slant Total Electron Content (STEC) estimated at collocated stations showed their good consistency expressed by the average standard deviation of 0.08 TEC Units.

Keywords

Precise Point Positioning;GNSS;ionosphere;PPP-RTK;ambiguity

Authors

NOSEK, J.; VÁCLAVOVIC, P.; ZHAO, L.; DOUŠA, J.

Released

3. 2. 2022

Publisher

ECON Publishing s.r.o.

Location

Brno

ISBN

978-80-86433-77-6

Book

Družicové metody v geodézii a katastru 2022

Edition number

1

Pages from

79

Pages to

87

Pages count

9

URL

http://hdl.handle.net/11012/203556

BibTex

@inproceedings{BUT176395,
  author="Jakub {Nosek} and Pavel {Václavovic} and Lewen {Zhao} and Jan {Douša}",
  title="Acceleration of PPP Integer Ambiguity Resolution When Emploing Ionospheric Delays",
  booktitle="Družicové metody v geodézii a katastru 2022",
  year="2022",
  number="1",
  pages="79--87",
  publisher="ECON Publishing s.r.o.",
  address="Brno",
  doi="10.13164/seminargnss.2022.79",
  isbn="978-80-86433-77-6",
  url="http://hdl.handle.net/11012/203556"
}