APOGEE - quAsi PilOt siGnal tEst bEd

The aim of the APOGEE (quAsi PilOt siGnal tEst bEd) Consortium is to provide a complete and advanced End-to-End G2G user receiver test bed for new Galileo G2G user receivers, enabling fast acquisition of G2G and legacy Galileo SV components, metasignal processing for increased accuracy, and robust operation in all user environments.

The proposed receiver baseline will target a TRL7 platform with a flexible architecture, allowing both immediate application validation and preparation for future live G2G signal availability, directly addressing critical needs in transportation and space domains.

The innovation focuses on the implementation and demonstration of Galileo second-generation (G2G) Quasi-Pilot (QP) signals, integrated also in advanced meta-signal processing, to primary offer faster acquisition of full SV Galileo set of signals and reduced time to first fix (TTFF) for all user domains, and additionally enhanced resilience and high accuracy in PVT solutions, even in degraded operating environments.

Challenge & technical solution

The absence of live G2G signals-in-space in line with foreseen ICD or sufficiently flexible simulation solutions for early testing in controlled scenarios and application adaptation, require to develop an advanced simulation and validation test bed, capable of demonstrating the benefits of the upcoming Galileo evolution, prior to its full deployment.

Such need for a flexible and reliable testing tool is addressed by a new GNSS simulator, developed by Safran, providing new G2G QP waveforms, legacy Galileo services and advanced end-user scenario emulation capabilities. Configurability both at the signal generation and receiver levels will allow refinement of the receiver solution and algorithms for future commercial exploitation.