John Sahr - Passive Radar Detection

Dr. John Sahr describes new applications of passive radar for detecting drones on the battlefield, monitoring traffic on the freeway, and keeping patients safe in the hospital using compact, inexpensive receivers that don't require licensing. Unlike traditional radar, which illuminates targets with a high-energy EM signal and takes time-of-flight measurements to gauge distance, passive radar relies on existing FM radio, DirecTV & Starlink signals. Since it requires no transmitter, passive radar opens the door to small, inexpensive devices with mesh-network applications to help radar evolve far beyond its current limitations. Dr. John Sahr is a PhD Electrical Engineer, former Chief Technology Officer at OneRadio, and former Professor & Interim Chair of Electrical Engineering at the University of Washington. Dr. Sahr's specializations include passive & bistatic radar systems, VHF radar systems, statistical signal processing, and computer programming, and his past research includes research in VHF bistatic passive radar for ionospheric turbulence and the augmentation of existing radar systems with additional illumination sources to improve weather data, ionspheric research & aerospace surveillance capabilities. Dr. Sahr has a BSEE from Caltech, and a PhD in Electrical Engineering from Cornell University, and has served on the boards of the Evergreen School in Shoreline, WA and Casa Latina in Seattle, where he supports their focus on education and outreach services for the Latin American immigrant community. LINKS & RESOURCES: John Sahr (LinkedIn) https://www.linkedin.com/in/john-d-sahr-0806005/ OneRadio http://www.oneradiocorp.com/ OneRadio Announces Air Force SBIR Phase I Contract to Provide Passive Radar-Based Drone Detection Application http://www.oneradiocorp.com/wp-content/uploads/2023/12/OneRadio-Corporation-Press-Release-Dec-18-2023.pdf Germany demonstrates passive radar system using Starlink satellite radiation https://www.army-technology.com/news/germany-demonstrates-passive-radar-system-using-starlink-satellite-radiation/?cf-view The Manastash Ridge radar: A passive bistatic radar for upper atmospheric radio science https://ieeexplore.ieee.org/document/7771129 Passive radar https://en.wikipedia.org/wiki/Passive_radar