CWA 16390:2012

The implementation of EGNOS/EDAS based services requires the use of OBU integrating GNSS GPS/EGNOS receiver capable of giving in output, in addition to positions & timing data2, also raw data (i.e. code ranges and, optionally, phase and Doppler measurements3). This document is the specification of the interface between the GNSS (GPS/EGNOS) receiver and the “Processing Algorithm” responsible for the implementation of EGNOS/EDAS based services. The Processing Algorithm is a software module that can run in the OBU or on a service platform external to the OBU. The specification is conceived to ensure flexibility to adopt different architectures and different Processing Algorithm (i.e. it is not intended to make a technical choice on the specific architecture or on the Processing Algorithm). Three informative annexes (Annex A, Annex B and Annex C) give examples of utilization of the specified interface, in tracking & tracing (T&T) services for dangerous goods transport applications, in location based services (LBS) and in traffic information data exchange (DATEX II).