Digital Echo Repeater.
Patent, Filed 26 Sep 91, patented 16 Jun 92,
DEPARTMENT OF THE NAVY WASHINGTON DC
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The present invention relates to an echo repeaterbeacon 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.
- Acoustic Detection and Detectors