Method of determining the coordinates of the radio signal source in satellite communication systems

This project tackles the hard problem of finding and pinpointing illegal or interfering radio transmitters that affect geostationary satellite links. Earth stations can be jammed on purpose or by accident, so knowing the exact location of an unauthorized transmitter is key to keeping communications reliable. The method uses a virtual antenna array with three positions to create a spatial reference frame. Those three points form the base of an irregular tetrahedron, and the unknown transmitter is treated as the fourth vertex. By modeling how the signal arrives—using Time Difference of Arrival (TDOA) and Frequency Difference of Arrival (FDOA)—the system computes the emitter’s coordinates relative to the satellite’s orbital position. A

simulation framework tests how well the approach works. It measures geometric dilution of precision (GDOP) and overall localization accuracy while varying noise levels and satellite ephemeris errors. This guide walks you through building the tetrahedral geometry, simulating signal‑propagation delays, and running the coordinate‑determination algorithms. It provides a solid base for further work in satellite spectrum monitoring and interference mitigation.

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