Pany, Thomas; Akos, Dennis; Arribas, Javier; Bhuiyan, M. Zahidul H.; Closas, Pau; Dovis, Fabio; Fernandez-Hernandez, Ignacio; Fernandez-Prades, Carles; Gunawardena, Sanjeev; Humphreys, Todd; Kassas, Zaher M.; Salcedo, Jose A. Lopez; Nicola, Mario; Psiaki, Mark L.; Ruegamer, Alexander; Song, Young-Jin; Won, Jong-Hoon (Institute of Navigation, 2024-01-24)
Taking the work conducted by the global navigation satellite system (GNSS) software-defined radio (SDR) working group during the last decade as a seed, this contribution summarizes, for the first time, the history of GNSS SDR devel-opment. This report highlights selected SDR implementations and achievements that are available to the public or that influenced the general development of SDR. Aspects related to the standardization process of intermediate-frequency sample data and metadata are discussed, and an update of the Institute of Navigation SDR Standard is proposed. This work focuses on GNSS SDR implementations in general-purpose processors and leaves aside developments conducted on field programmable gate array and application-specific integrated circuit platforms. Data collection systems (i.e., front-ends) have always been of paramount importance for GNSS SDRs and are thus partly covered in this work. This report represents the knowledge of the authors but is not meant as a complete description of SDR history.