Different NAVWAR PRS sensors, along with common interfaces, must be determined and combined in various use cases as NAVWAR subsystems (integration environments) to create a NAVWAR network. They must include Galileo as PNT source and Galileo PRS as a PNT service. The interfaces with other communities and stakeholders must be specified as part of the proof of concept.

The proposals must address the following crucial development strands:

1. Support, via a space-based and ground-based NAVWAR surveillance system, the nominal performances of GNSS/PRS receivers in a contested and hostile electromagnetic environment;

– Allowing localization, identification and characterization of main threats, and monitoring of GNSS signals; – Including the federation of NAVWAR operational centres (used by the Member States based on a NAVWAR information-management system for data exploitation and C2 of the network of NAVWAR sensors/subsystems (space and ground)), that will support the implementation of the overall NAVWAR capability (including PRS);

– Including interfaces with other communities in order to exchange NAVWAR situational awareness picture and recommended offensive measures;

– including common standards for NAVWAR surveillance interoperability among EU Member States;

2. Develop a modular PRS mobile receiver concept  able to contribute to the network of NAVWAR sensors/subsystems, and possibly benefit from the overall capability; functional requirements related to data content and delivery aspects, must in particular properly identify typical performance features that must be made available to the user segment through a secondary channel or in a server-based GNSS service approach;

– This must include a risk reduction phase for maturation of miniaturized, modular, and SWaP-C optimized mobile PRS technologies and analysis regarding availability by EU vendors;

3. Implement anti-jamming and anti-spoofing technologies in secure innovative architectures to support PNT superiority.

All aforementioned workstrands must take into account on-going EU funded initiatives, in particular Galileo 2nd generation, and complement the on-going EDIDP GEODE developments/designs with modular miniaturized form factor PRS technologies, in particular for small platforms or mobile use cases.

The proposals must provide an efficient answer to a variety of operational concerns. (see p.54-55 of the EDF 2021).