Local-area position navigation system with fixed pseudolite refe

Details Local-area position navigation system with fixed pseudolite refe Local-area position navigation system with fixed pseudolite refe

1995-05-30

1997-11-11

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

H04B 7185, G01S 502

Patent

active

056869240

ABSTRACT:
Several fixed-location pseudolites transmit coordinates of their respective positions to a local area navigation receiver. The respective position and range information to each pseudolite are used to compute the position of the receiver. The pseudolites transmit on frequencies exempt from licensing requirements at power levels under one watt and use spread spectrum communication and pseudo random number codes similar to the global positioning system operated by the United States Government.

REFERENCES:
patent: 5347536 (1994-09-01), Meehan
patent: 5375059 (1994-12-01), Kyrtsos et al.
patent: 5390124 (1995-02-01), Krytsos
patent: 5390125 (1995-02-01), Sennott et al.
patent: 5402450 (1995-03-01), Lennen
patent: 5512902 (1996-04-01), Guthrie et al.
patent: 5555503 (1996-09-01), Krytsos et al.
patent: 5557284 (1996-09-01), Hartman

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