Implementation of a Testbed for GNSS-R Payload Performance Evaluation

• Main Authors: Adrian Perez, Joan Francesc Munoz-Martin, Jorge Querol, Hyuk Park, Adriano Camps
• Format: Article
• Language: English
• Published: IEEE 2020-01-01
• Series: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
• Subjects: Earth Observatio (EO); Global Navigation Satellite System (GNSS); GNSS-Reflectometry (GNSS-R); radio-frequency interference (RFI); simulation; software-defined radio (SDR)
• Online Access: https://ieeexplore.ieee.org/document/9103266/

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.