GNSS Risk and Service Monitoring

Short Description

Contents and goals

The goal of GRISMO (GNSS Risk and Service Monitoring) is to demonstrate the added value of robust Galileo signals using a risk management tool against GPS, EGNOS and Galileo Open Service. The focus is on priority scenarios for safety-critical commercial and governmental applications.

Starting point / motivation

In recent years, user awareness regarding intentional interference was increased by practical demonstrations and publication of interference measurements. Many users now know that they may be affected by GNSS interference, but they are currently uncertain about the extent to which they are threatened and what they can do about it.

Risk management is used in many areas of our daily lives to avoid, reduce or share risks. Risk management strategies exist for almost every aspect of our lives, but none for GNSS data. Comprehensive risk management not only requires monitoring of GNSS signals, but also identifying and analysing different threat scenarios before deploying the application, applying risk minimization strategies, and monitoring the success of these strategies.

Previous monitoring concepts are based on high-static static reference stations to perform a quality assessment and are thus locally bound on the one hand and tailored to professional users on the other hand and therefore neglect the underlying GNSS application.


GRISMO provides a sound risk assessment based on actual user requirements, specific threat scenarios, and the technical data provision capabilities of the users.

The assessment of the effects on the quality of service takes into account different mitigation strategies and different robust GNSS services. These include Galileo Public Regulated Service (PRS), Galileo Commercial Service (CS) Authentication, but also the – soon available - Galileo Open Service Navigation Message Authentication (OS-NMA) method.

Expected results

GRISMO will carry out a risk analysis based on the respective GNSS application and the threat scenario to determine the probability of occurrence as well as the effects on the receiver, the application and the user. Building on this, suitable GNSS services and mitigation strategies are proposed for the specific application.

For quality of service monitoring, different monitoring and mitigation strategies are examined and tested in reality. The focus is on developing strategies for users with limited data provision capabilities (e.g., low-cost receivers, smartphones).

The Austrian Armed Forces military training ground Seetaler Alpe and a valid exemption for jamming and spoofing in this area, are a unique opportunity to carry out test campaigns in the Alpine region, to analyse the data and to develop new technologies based on it. In this context, Austria is the international leader, as for example in Germany, such activities are only in planning.

The basis for this is the interference analysis software developed by TeleConsult Austria, which will be expanded as part of the project. This software tool can subsequently be tested and used as a reference in the context of an Interference Testbed.

Project Partners

Project Coordinator

OHB Digital Solutions GmbH

Project partner

  • BRIMATECH Services GmbH
  • Federal Ministry of Defense
  • Austro Control Österreichische Gesellschaft für Zivilluftfahrt mit beschränkter Haftung

Contact Address

OHB Digital Solutions GmbH
Rettenbacher Straße 22
A-8044 Graz