Space Weather Impact on GNSS and the development of GNSS Performance Indicators

Kurzfassung

We will present first results of the ESA SWIGPAD project, which has the objective to develop and demonstrate a user-tailored GNSS performance indicator application providing information on the expected impact of space weather on positioning at the user’s location. The development of performance indicator has been identified by ESA as a high-priority development in order to meet growing end user needs for space weather information in the navigation domain. A targeted analysis of space weather-related disruptions on technical systems and services in the field of satellite-based navigation includes the consideration of the requirements of different users in this field. The performance indicators will be developed based on existing data of the ESA Space Weather network. The application will address multiple representative use-cases derived from direct input of expert-users from industry and government. The overall goal is to provide Space Weather end users in different GNSS domains an overall numerical estimate of positioning uncertainty resulting from ionospheric conditions along with the possibility to view and retrieve the time evolution of this uncertainty in numerical and chart form.