GPS receiver having fast resolution of carrier phase ambiguity

Details GPS receiver having fast resolution of carrier phase ambiguity GPS receiver having fast resolution of carrier phase ambiguity

1998-12-02

2000-11-21

Issing, Gregory C.

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

Directive

Including a satellite

375326, H04B 7185, H04L 2714

Patent

active

061509787

ABSTRACT:
A carrier ambiguity detector for resolving a 1/2cycle carrier phase ambiguity in an incoming GPS signal before the arrival of the next preamble by detecting a match or an inverted match between an internally stored expected data message and the incoming data in the remaining subframe before the arrival of the next preamble. The carrier ambiguity detector of the present invention includes a buffer for buffering incoming data, a data memory for storing time-tagged expected data, a data pointer for selecting certain expected data corresponding to a GPS-based time that is synchronized to the incoming data, non-inverting and inverting comparators for comparing the buffered data to the expected data, and a data compare detector coupled to the comparators for indicating a non-inverted or an inverted match for a zero degree or a one-hundred eighty degree resolution, respectively, of carrier phase information.

REFERENCES:
patent: 5025455 (1991-06-01), Nguyen
McGuffin et al, "I/Q Channel Reversal Correcting Properties of an SQPSK Costas Loop With Integrated Symbol Synchronization", IEEE Trans. on Comm., vol. 36, No. 9, Sep. 1988, pp. 1082-1086.
Euler, Hans-Jurgen, "Achieving High Accuracy Relative Positioning in Real-time System Design, Performance and Real-time Results", 1994 IEEE Plans, Apr. 11-15, 1994, pp. 540-546.
Park, Chansik et al, "Efficeint Ambiguity Resolution Using Constraint Equation", 1996 IEEE Plans, Apr. 22-26, 1996, pp. 277-284.

Affiliated with

Also associated with

Rating

GPS receiver having fast resolution of carrier phase ambiguity does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with GPS receiver having fast resolution of carrier phase ambiguity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GPS receiver having fast resolution of carrier phase ambiguity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1261976