This article details a fascinating project where a researcher successfully used signals from the NISAR radar-imaging satellite to create a passive radar system. By utilizing the satellite's L-band chirp signal, reflected off the landscape, and comparing it to a direct signal, a topographical image could be generated. The setup involved using GNSS antennas and an SDR (Software Defined Radio) with a Raspberry Pi to record and process the signals. While not producing high-resolution images, the experiment successfully demonstrated the feasibility of using satellite signals for passive radar, even with relatively simple and inexpensive equipment.
A technical overview of intercepting and decoding satellite communications, detailing hardware, software, and techniques used for signal acquisition and decryption.
GUI application for using HackRF as a spectrum analyzer with features like optimized settings, easy retuning, peak/persistent display, and more.
Download 470 megapixel real-time images of Earth, captured every 10 minutes by the NOAA’s GOES-East satellite.
This article provides a guide on how to receive weather satellite images using SatDump.
