Method and apparatus for direct re-acquisition of precision-code

Details Method and apparatus for direct re-acquisition of precision-code Method and apparatus for direct re-acquisition of precision-code

1995-03-29

1997-03-25

Bocure, Tesfaldet

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

375357, 342357, 455 132, H04L 700

Patent

active

056152361

ABSTRACT:
An improved single or dual-frequency navigation satellite receiver that can directly re-acquire P-code code-phase after a brief loss of P-code tracking. A digital signal processor (DSP) writes its current position fixes to a non-volatile memory. The DSP also updates a clock that keeps a running estimate of precise global positioning system time. When P-code code-phase is lost, it is re-acquired by reading the clock back in, adjusting for its drift, reading in the last position fix from the non-volatile memory, and then beginning an advanced P-code code-phase search based on such head start information.

REFERENCES:
patent: 5177490 (1993-01-01), Ando et al.
patent: 5323164 (1994-06-01), Endo

Affiliated with

Also associated with

Rating

Method and apparatus for direct re-acquisition of precision-code does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for direct re-acquisition of precision-code, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for direct re-acquisition of precision-code will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2210374