NATIVE-SSR (Native navigation system with SSR corrections for high-precision GNSS positioning)

This project aims to implement two different approaches for native support of State Space Representation (SSR) correction data in GNSS receivers. First, the SSR format will be converted to the Observation Space Representation (OSR) format and then made available to the receiver. Second, a method will be implemented to process SSR correction data directly within the GNSS receiver and to correct the generated position solution directly.
This project is being carried out in cooperation with RFmondial GmbH.

One of the advantages of SSR correction data is that it uses one-way communication, in contrast to the two-way communication required for OSR correction data. Furthermore, in the SSR format, the errors of individual conditions can be analyzed, such as atmospheric effects, whereas in OSR data, the total error is reported for the respective observation (pseudo-range, carrier phase measurement).

A previous project in cooperation with RFmondial GmbH has already demonstrated the feasibility of transmitting GNSS correction data via Digital Audio Broadcast (DAB). The DAB receiver module prototype developed there is to be further developed in this project, also in cooperation with RFmondial GmbH, and supplemented with the implementations described above. RFmondial GmbH is primarily responsible for the further development of the receiver module, while the IfE is responsible for the software implementation.