Dr. Mireille Elhajj is the founder of London-based boutique consultancy Astra-Terra, a company specialising in Positioning, Navigation Timing, Earth Observation (EO) data modelling and analysis, and Intelligent Transport Systems (ITS) with an emphasis on space and infrastructure, including intelligent transportation. (www.astraterra.com). She is also a Fellow at The Royal Institute of Navigation (RIN) in London and a Senior Honorary Lecturer at Imperial College London. Dr. Elhajj has a background in PNT, systems engineering, space applications and transportation. Previously, she was the Director of the Integrated Space Science Engineering Program (executive and continuing education) and an Advanced Research Fellow at Imperial College London's Department of Civil and Environmental Engineering. A Lecturer and an “Infrastructure and Space Science Fellow” at the Institute of Security Science and Resilience. She has published various papers in Positioning, Navigation and Timing (PNT), Interference mitigation and novel integrity monitoring methods for multiple applications in telematics and smart cities. She holds a PhD from Imperial College London, where she researched using new GPS signals to improve accuracy for surface transport with TfL London. She has an MSc in Financial Analysis and Fund Management (FAFM) from Exeter University and an MSc in Transport Engineering from Imperial College London. She is a member of the International Advisory Board (IAB) at Imperial College London Civil and Environmental Engineering and a member of the Radio Technical Commission for Maritime Services. (RTCM), and a member of the technical committee at the RIN. She has several publications on GNSS anti-interference methods, autonomous vehicles, ML-based GNSS signal classification and Resilience of Infrastructure.