Dr Juliette Marais is Director of Research at the University Gustave Eiffel, France. Her research interests focus on analysis, detection and mitigation of local effects (Urban environment, trees, interferences...) impacting GNSS signals and positioning performance. She's mainly involved with the railway application domain with a participation in national and EU projects (STARS, ERSAT GGC, Gate4Rail, RAILGAP) and with EUSPA.