Method and apparatus for the rapid detection and measurement of

Details Method and apparatus for the rapid detection and measurement of Method and apparatus for the rapid detection and measurement of

1994-12-14

1996-07-02

Nguyen, Hoa T.

Excavating

371 671, G06F 702

Patent

active

055330380

ABSTRACT:
A method and apparatus for detecting and measuring the code phase offset in bits and fractional bits, or the time delay in master clock cycles, between a reference binary pseudo-noise (PN) code sequence and a similar sequence of unknown delay. Rapid detection and measurement is achieved by utilizing parallel feed-forward logic and eliminating all feedback and variable delay circuitry. At the start of a new detection and measurement cycle, the current state of the A input sequence is stored and correlated with new B input stakes. Likewise the state of the B input sequence is stored and correlated with a new A input code states. After a time equal to the delay between the two input sequences, one of the correlators will produce an output. A time delay counter runs from the start of a new detection and measurement cycle and stops on the occurrence of a correlator output.

REFERENCES:
patent: 3728533 (1973-04-01), Matthews
patent: 3774206 (1973-11-01), Rauch
patent: 3953674 (1976-04-01), Fletcher et al.
patent: 4013969 (1977-03-01), Dennim
patent: 4728884 (1988-03-01), Gumm
patent: 4868512 (1989-09-01), Bridgman
patent: 5014137 (1991-05-01), Shimada
patent: 5124656 (1992-06-01), Yassa et al.
patent: 5128961 (1992-07-01), Ueda et al.
R. B. Ward & K. P. Yiu, "Acquistion of Pseudonoise Signals by Recursion . . . Estimation," IEEE Trans. on Comm., V. COM-25, No. 1, pp. 784-794 (Aug. 1977).

Affiliated with

Also associated with

Rating

Method and apparatus for the rapid detection and measurement of 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 the rapid detection and measurement of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the rapid detection and measurement of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1513298