Accession Number : ADD015449

Title :   Digital Echo Repeater.

Descriptive Note : Patent, Filed 26 Sep 91, patented 16 Jun 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Pirie, David M ; Brown, Christopher W

Report Date : 16 Jun 1992

Pagination or Media Count : 6

Abstract : The present invention relates to an echo repeater/beacon system for use on-board marine vessels and platforms. The system includes a hydrophone for receiving an incoming acoustic signal from a remote station, an on-board computer for analyzing, detecting, shaping. collecting and storing up to 10 seconds of a shaped version of the incoming signal for later transmission as an echo signal, and a transmitting transducer for transmitting the echo signal. The on-board computer also is used to generate a beacon signal at a desired frequency and a desired repetition rate.

Descriptors :   *REPEATERS, *SONAR BEACONS, *PATENTS, ACOUSTIC SIGNALS, FREQUENCY, HYDROPHONES, PLATFORMS, REPETITION RATE, STATIONS, TRANSMITTING, COMPUTER APPLICATIONS, SONAR TRANSDUCERS, SONAR ECHOES

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE