Avalanche Detection Using Passive Radar Technology

This research news article presents a study conducted by researchers at the Fraunhofer Institute for High Frequency Physics and Radar Techniques FHR, focusing on avalanche detection using passive radar technology. The study addresses the critical need for effective avalanche monitoring, particularly in remote mountainous regions where traditional methods face significant challenges. The researchers explored the feasibility of utilizing signals from satellite mega-constellations, specifically Starlink and OneWeb, to confirm the occurrence of avalanches triggered by controlled detonations. The article outlines the advantages of passive radar, including its cost-effectiveness, energy efficiency, and ease of installation, as it does not require transmission licenses. The study also details the use of synthetic aperture radar (SAR) to generate continuous images of the Earth's surface, enhancing visibility in areas obscured by terrain. The findings indicate that passive radar is a viable solution for avalanche detection, supported by simulations and practical tests conducted in various locations.