Evolution of PAU/PARIS End-to-end Performance Simulator (P2EPS) towards GNSS reflectometry, radio occulation and Scatterometry simulator (GEROS-SIM)

This work shows a state-of-the-art GNSS reflectometry end-to-end performance simulator, selected for the ESA's GNSS rEflectometry, Radio Occultation and Scatterometry onboard International Space Station (GEROS-ISS). For the efficient development process, the PAU/PARIS End-to-end Performance Simulator (P
²
EPS) are used as main building blocks for the GEROS-Simulator. To accommodate the GEROS specific situation of platform and instrument, P
²
EPS is modified. Additionally, several considerations in spaceborne GNSS-R techniques are newly updated in GEROS-SIM, improving the performance in terms of accuracy and completeness. GEROS-SIM will be delivered as a web application, i.e., executable via web browser connecting GEROS-SIM webpage hosted by UPC-BarcelonaTech.