1. Introduction

Github: https://github.com/groops-devs/groops

2. Reference

Mayer-Gürr, T., Behzadpour, S., Eicker, A., Ellmer, M., Koch, B., Krauss, S., Pock, C., Rieser, D., Strasser, S., Suesser-Rechberger, B., Zehentner, N., Kvas, A. (2020). GROOPS: A software toolkit for gravity field recovery and GNSS processing. Earth and Space Science Open Archive, 8. https://doi.org/10.1002/essoar.10505041.1