Method and apparatus for tracking objects underwater

Details Method and apparatus for tracking objects underwater Method and apparatus for tracking objects underwater

1998-05-27

2000-08-01

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With beam steering, scanning, or focussing

367119, 367118, G01S 380

Patent

active

060976705

ABSTRACT:
The position of an object is tracked underwater. Prior to tracking, the object is tagged with an acoustic transmitter. It is important that the transmitter emits sound waves having a frequency of at least 200 kilohertz (kHz) because it has been found that these transmitter frequencies provide better tracking data in noisy environments than conventional transmitters operating at 50-60 kHz. The acoustic transmitter is located by a split-beam transmitter. The position of the object can be accurately tracked by using two split-beam transducers, synchronization of transducer and transmitter, or echo ranging.

REFERENCES:
patent: 4914642 (1990-04-01), Fraser et al.
patent: 5095467 (1992-03-01), Olson et al.
patent: 5168473 (1992-12-01), Parra
patent: 5331602 (1994-07-01), McLaren
"Ultrasonic Tracer" Electronics, vol. 30, No. 4, pp. 156-160, Apr. 1, 1957.
Steig et al, "Monitoring fish movement patterns in a reservior using horizontally scanning split beam techniques", ICES Journal of Marine Science, vol. 53, pp. 435-441, 1996.
Racca et al., "Technological advances in riverine fish counting for coastal fishery management", 1996.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-670462