Digital delay generator for sonar and radar beam formers

Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

342375, 367123, H01Q 300, G01S 380

Patent

active

046880453

ABSTRACT:
This invention relates to apparatus and a method of controlling the amount of delay or phase-shift which is applied to a signal received at or transmitted from each transducer in a multi-transducer antenna to produce a beam directed at a specific target point. For each transducer a first look-up table is used for storing first digital words representative of the included angle between the lines joining the target to a reference point, and the same reference point to a transducer. A second look-up table is associated with the first look-up table for each transducer, and stores second digital words representing delay or phase-shift control signals corresponding to ranges of the target relative to the reference point for each of said first digital words. Each first look-up table is addressed with an address signal representing the direction of the line from the reference point to the target, to obtain a corresponding first digital word. Each second look-up table is addressed with a corresponding first digital word combined with a signal representing the range of the target to obtain a corresponding second digital word. A signal received or transmitted by the corresponding transducer is delayed or phase-shifted an amount represented by the second digital word.

REFERENCES:
patent: 3869693 (1975-03-01), Jones
patent: 4166274 (1979-08-01), Reudink et al.
patent: 4166999 (1979-09-01), Brady, III
patent: 4217587 (1980-08-01), Jacomini
patent: 4232380 (1980-11-01), Caron et al.
patent: 4277787 (1981-07-01), King
patent: 4292634 (1981-09-01), Wu et al.
patent: 4353119 (1982-10-01), Daniel et al.
patent: 4445119 (1984-04-01), Works
patent: 4489325 (1984-12-01), Bauck et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Digital delay generator for sonar and radar beam formers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital delay generator for sonar and radar beam formers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital delay generator for sonar and radar beam formers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1120464

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.