1. Introduction

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.

Github: https://github.com/heiwa0519/PPPLib

2. Reference

Chen, C., & Chang, G. (2020). PPPLib: An open-source software for precise point positioning using GPS, BeiDou, Galileo, GLONASS, and QZSS with multi-frequency observations. GPS Solutions, 25(1), 1-7. https://doi.org/10.1007/s10291-020-01052-4