https://peertube.watch/videos/watch/38cff4ed-04b5-4e86-9d0e-d626acd1f7f3 Using a WiFi emitter as radiofrequency source illuminating a scene under investigation for slow movement (e.g. landslides), a Ground-Based Synthetic Aperture RADAR (GB-SAR) is assembled using commercial, off the shelf hardware. The dual-channel coherent Software Defined Radio (SDR) receiver records the non-cooperative emitter signal as well as the signal received by a surveillance antenna facing the scene. Spatial diversity for azimuth mapping using direction of arrival measurement is achieved by moving the transmitter and receiver setup on a rail along a meter-long path -- the longer the better the azimuth resolution -- with quarter wavelength steps. The fully embedded application runs on a Raspberry Pi 4 single board computer executing GNU Radio on a Buildroot-generated GNU/Linux operating system. All development files are available at https://github.com/jmfriedt/SDR-GB-SAR/ Speaker: Jean-Michel Friedt, Track: Software-Defined Radio and Amateur Radio devroom, Room: UB2.147, When: Sunday 4 February 2024, 10:30–10:55 (Brussels time), Schedule: FOSDEM 2024 event page, Slides & links Github repository, Preliminary slides of the presentation, Licence: Creative Commons Attribution 2.0 Belgium (CC BY 2.0 BE) (as stated in the FOSDEM video archive). Attribution: “Covert Ground Based Synthetic Aperture RADAR using a WiFi emitter and SDR receiver” by Jean-Michel Friedt, FOSDEM 2024. Original recording: 2024/ub2147/fosdem-2024-2050-covert-ground-based-synthetic-aperture-radar-using-a-wifi-emitter-and-sdr-receiver.av1.webm from the FOSDEM video archive. This channel is an unofficial mirror; FOSDEM is a free and non-commercial event organised by the community for the community. Sun, 25 Oct 2026 01:51:05 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.watch https://peertube.watch/lazy-static/avatars/3b284627-b75f-409e-ac2e-10f4c2946f43.png https://peertube.watch/videos/watch/38cff4ed-04b5-4e86-9d0e-d626acd1f7f3 All rights reserved, unless otherwise specified in the terms specified at https://peertube.watch/about and potential licenses granted by each content's rightholder.