This repository contains processing code for a software defined radio based passive radar. Passive radars don't transmit any signals of their own - instead, they locate targets by detecting the echoes of ambient radio signals that bounce off of them. Uses FM radio broadcasts as the illuminating signal. This is not realtime - it analyzes stored PR information and displays it, and it's not quick. It does tell you how to collect your own radar data, however, as well as which SDRs are feasible.

A real-time radar which can support various SDR platforms.

Support for the SDRplay RSPDuo and USRP (only tested on the B210). 2 channel processing for a reference and surveillance signal. Designed to be used with external RF source (for passive radar or active radar). Outputs delay-Doppler maps to a web front-end. Record raw IQ data by pressing spacebar on the web front-end. Saves delay-Doppler maps in a JSON array.

The Flipper Zero Radar Scanner is an application designed for the Flipper Zero's GPIO capabilities, utilizing the RCWL-0516 Microwave Radar module to detect the presence and movement of living beings or people. This powerful radar module is capable of detecting movement at a range of approximately 8 meters, depending on the environment, and can even detect humans through walls, ceilings, and floors up to 5-6 meters away.

Github repository for the Kraken SDR.

This software is intended to demonstrate the direction of arrival (DoA) estimation capabilities of the KrakenSDR and other RTL-SDR based coherent receiver systems which use the compatible data acquisition system - HeIMDALL DAQ Firmware.

The complete application is broken down into two main modules in terms of implementation, into the DAQ Subsystem and to the DSP Subsystem. These two modules can operate together either remotely through Ethernet connection or locally on the same host using shared-memory.

Running these two subsystems on separate processing units can grant higher throughput and stability, while running on the same processing unit makes the entire system more compact.

There is a beta Raspbian image available for download that includes all of the necessary software.

Designed with the RasPi 4 specifically in mind.

Documentation for the Kraken SDR is in this repo's wiki.

Also, thankfully, has instructions for installing the software yourself so you're not reliant upon their builds.