Implementation of a testbed for GNSS-R payload performance evaluation

The functional performance of space-borne instruments must be validated on ground before and after satellite integration. The effects of radio-frequency interference are also becoming more important, even in protected bands for earth observation. In this article, a GNSS and GNSS-R signal simulator is developed as part of a testbed of GNSS receivers and GNSS-R payloads’ performance in high dynamics, and to study the effects of RFI in the GNSS-R observables. This article describes the different concepts and key enabling techniques that have been developed to support this project.This work was supported in part by Spanish Ministerio de Ciencia, Innovación y Universidades and EU ERDF under Project RTI2018-099008-B-C21, in part by the Sensing With Pioneering OpportunisticTechniques under Grant MDM-2016-0600, in part by the Maria de Maeztu Excellence Research Units Comm SensLab, and in part by Spanish Ministeriode Economía y Competitividad (MINECO/FEDER).Peer ReviewedPostprint (author's final draft