Spaceborne Resilience

Analysis of GNSS Spaceborne Resilience

Aims

The aim of the activity is to perform a RFI (Radio Frequency Interference) risk assessment for space-borne GNSS receivers and derived products, as well as to investigate on RFI mitigation techniques, considering different types of missions and scenarios. This includes:

• Performing a comprehensive RFI risk assessment.
• Using signal generators to assess the RFI effects before and after mitigation for the most likely and critical risks.

Brief Description

Space-borne GNSS receivers have become a mission-critical element in most LEO (Low-Earth Orbit) missions and their use is being extended to other types of missions including GTO (Geostationary Transfer Orbit) / GEO (Geostationary Orbit) and highlyelliptical-orbit missions.
It is well-known that GNSS receivers are vulnerable to Radio Frequency Interference (RFI) and space-borne receivers are not an exception.
While there have been some studies on RFI effects on spaceborne GNSS receivers, no comprehensive RFI risk assessment for spaceborne receivers have been carried out so far.
After identifying and assessing the various RFI and spoofing threats for spaceborne GNSS missions, the vulnerability of the GNSS receiver will be analyzed exploiting the detailed insight in the design of real spaceborne GNSS receivers within this project.