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Objective

To setup a cluser of capture devices (Raspberry Pi + SDR) across the city recording IQ values. Then have a public facing website radio-mapper.org that aggregates processed IQ data to give you a google map location of radio sources and filters.

Research

Stefan Scholl presented this Experiments on Transmitter Localization with TDOA. You can see in the slide a link to async_rearrangements branch of librtlsdr. This is a good starting point for this project.

Documents

Radio Machine Learning Dataset Generation with GNU Radio
Time Difference of Arrival for Positioning
Signal Positioning using RTLSDR
Database of Signals
Detecting/Locating Unintended Radio Transmissions
Creating VHF heatmap with RTLSDR
RTLSDR TDoA
KiwiSDR TDoA

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Map stationary and moving radio signals to longitude, latitude points with SDR

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