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ALIX

ALIX is an experiment by the Radboud Radio Lab of Radboud University, the Netherlands. Its goal is to track the (live) location of astronauts or mobile vehicles like rovers within a radius of several kilometers. On Earth, the exact location can easily be determined with satellites, but this is not yet possible on Mars. Therefore, other methods must be used to determine the location. ALIX only requires very little equipment: It uses a mobile radio transmitter, some reference beacons, and a small network of receiver stations. The mobile transmitter sends a radio signal that can be measured by the receiver stations. While at least three receiver stations measure the signal, the exact location of the mobile transmitter can be tracked over time. The beacons send radio signals in other frequencies to the receiver stations, which helps to determine the exact location of the transmitter.




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