PPPLib: An open-source software for precise point positioning using GPS, BeiDou, Galileo, GLONASS, and QZSS with multi-frequency observations

Abstract

Precise Point Positioning Library (PPPLib) is a multi-GNSS data processing software designed to process multi-frequency data from GPS, BeiDou, Galileo, GLONASS, and QZSS. PPPLib is written in the C/C++ programming language. It can compile and run on both Linux and Windows operating systems. PPPLib mainly performs precise point positioning from single to triple frequency based on either ionospheric-free or uncombined observations. Moreover, it solves for abundant parameters, including position, tropospheric delay, ionospheric delay, and ambiguity information. Useful scripts and visualization tools are also provided for data download, batch processing, or solution presentation. We give a preliminary review, including positioning accuracy and convergence time of PPP using dual-frequency, ionospheric-free from single system to multi-GNSS, to show the working status of the current version of the software. In addition, the software also supports post-processing kinematic mode and INS/GNSS loosely coupled mode for kinematic positioning.

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Data Availability

All data and material supporting the conclusions of this article are available. They are either deposited in publicly available repositories or presented in the related paper.

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Acknowledgements

This study was supported by “the Fundamental Research Funds for the Central Universities (Grant No. 2019BSCX25).”

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Correspondence to Guobin Chang.

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The GPS Tool Box is a column dedicated to highlighting algorithms and source code utilized by GPS engineers and scientists. If you have an interesting program or software package you would like to share with our readers, please pass it along; e-mail it to us at gpstoolbox@ngs.noaa.gov. To comment on any of the source code discussed here, or to download source code, visit our website at http://www.ngs.noaa.gov/gps-toolbox. This column is edited by Stephen Hilla, National Geodetic Survey, NOAA, Silver Spring, Maryland, and Mike Craymer, Geodetic Survey Division, Natural Resources Canada, Ottawa, Ontario, Canada.

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Chen, C., Chang, G. PPPLib: An open-source software for precise point positioning using GPS, BeiDou, Galileo, GLONASS, and QZSS with multi-frequency observations. GPS Solut 25, 18 (2021). https://doi.org/10.1007/s10291-020-01052-4

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Keywords

  • GNSS
  • Precise point positioning (PPP)
  • Multi-frequency
  • Open-source