CONGO first GPS/GIOVE tracking network for science, research

Selected results from the Cooperative Network for GlOVE Observation (CONGO) demonstrate how the global network provides early familiarization with the new Galileo signals and access to precise GlOVE orbit and clock information, to develop new processing techniques for multi-constellation, multi-frequency GNSS. A key requirement for the CONGO network is the capability to provide continuous tracking of GlOVE satellites irrespective of their orbital location. The goal of OTA testing is to obtain a snapshot of performance of the device under test (DUT) in all directions around it. The GeNeRx, designed as a test receiver, essentially combines a heritage GPS receiver for semi-codeless dual-frequency P(Y) tracking with a supplementary board for Galileo signal processing. Similarly, the design of high-performance GNSS antennas for multiple frequency bands poses numerous challenges. The resulting products will enable a combined positioning using GPS/GIOVE or GPS/GLONASS/GIOVE measurements now provided by the latest geodetic GNSS receivers.