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Algorithm Makes Satellite Signals Act Like GPS

By Ohio State News

May 8, 2023

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An algorithm developed by Ohio State University (OSU) researchers can listen in on satellite signals and use them to locate any point on Earth.

The algorithm eavesdropped on signals from eight low Earth orbit (LEO) satellites for approximately 10 minutes, after which it was able to locate and zero in on a stationary ground receiver with an error of only about 5.8 meters (19 feet).

The researchers required no assistance from satellite operators, noting they only had access to publicly available information relevant to the satellites' downlink transmission frequency and a rough estimate of their locations.

OSU's Zak Kassas said the algorithm is LEO constellation-agnostic, meaning it can use practically any satellite signal.

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