Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1995-02-02
1996-07-30
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
342352, G01S 502
Patent
active
055416063
ABSTRACT:
The present invention relates to the new W code enhanced GPS receiver which allows to receive and demodulate the L1 and L2 satellite signals encrypted with the unknown Y code. No assumptions are made about the timing or the structure of the unknown Y code. The signal-to noise ration is not compromised in comparison with the reception of the L1 and L2 signals without code encryption.
REFERENCES:
patent: 4485383 (1984-11-01), Maher
patent: 4928106 (1990-05-01), Ashjavee et al.
patent: 5390207 (1995-02-01), Fenton et al.
Phan Dao L.
Tankhilevich Boris G.
Tarcza Thomas H.
Trimble Navigation Limited
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