The joint ESA/NASA Galileo/GPS Receiver Onboard the ISS – The GARISS Project

Werner Enderle, Erik Schönemann, Francesco Gini, Michiel Otten, Pietro Giordano, James. J. Miller, O. Scott Sands, David Chelmins, Oscar Pozzobon

Abstract:	ESA and NASA conducted a joint Galileo/GPS space receiver experiment on-board the International Space Station (ISS). The objectives (Enderle 2017) of the joint project were to demonstrate the robustness of a combined Galileo/GPS waveform uploaded to NASA hardware already operating in the challenging space environment - the SCaN (Space Communications and Navigation) software defined radio (SDR) testbed (FPGA) - on-board the ISS. These activities data included the analysis of the Galileo/GPS signal and on-board Position/Velocity/Time (PVT) performance, processing of the Galileo/GPS raw data (code- and carrier phase) for Precise Orbit Determination (POD), and validate the added value of a space-borne dual GNSS receiver compared to a single-system GNSS receiver operating under the same conditions. This paper will provide a general overview of the Galileo/GPS experiment – called GARISS - on-board the ISS, describe design, test and validation and also the operations of the experiment. Further, the various analysis conducted in the context of this joint project and also the results obtained will be presented with a focus on the (Precise) Orbit Determination results.
Published in:	Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019) September 16 - 20, 2019 Hyatt Regency Miami Miami, Florida
Pages:	1147 - 1156
Cite this article:	Enderle, Werner, Schönemann, Erik, Gini, Francesco, Otten, Michiel, Giordano, Pietro, Miller, James. J., Sands, O. Scott, Chelmins, David, Pozzobon, Oscar, "The joint ESA/NASA Galileo/GPS Receiver Onboard the ISS – The GARISS Project," Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019), Miami, Florida, September 2019, pp. 1147-1156. https://doi.org/10.33012/2019.17079
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In