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Low power telemetry system and method

  • US 8,330,614 B2
  • Filed: 09/15/2009
  • Issued: 12/11/2012
  • Est. Priority Date: 06/01/2004
  • Status: Active Grant
First Claim
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1. A mobile marine surveillance system comprising:

  • a termination device;

    a bus having a plurality of submersible enclosures displaced at intervals, each submersible enclosure enclosing a sensing channel coupled to the bus;

    a controller for (1) providing power to each channel, (2) controlling each channel to present a channel impedance to the bus during a time period designated for the channel, (3) transmitting, from the termination device, an analog pulse over the bus during the time period designated for each channel, and (4) receiving a channel signal from a partial reflection of the pulse returning to the termination device during the designated time period, the amplitude of the reflected pulse representing an impedance mismatch proportional to a signal sensed by the channel; and

    a marine vehicle means for towing the bus through water.

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