A method and apparatus comprising a satellite, an antenna system associated with the satellite, and a transmitter in the satellite. The antenna system is configured to transmit a signal in a direction away from a surface of an earth. The transmitter is configured to transmit location information in the signal using the antenna system.
Space positioning system
Raumpositionierungssystem
Système de positionnement spatial
2018-06-20
Patent
Electronic Resource
English
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