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System and method for precision acoustic event detection

  • US 7,420,878 B2
  • Filed: 01/20/2005
  • Issued: 09/02/2008
  • Est. Priority Date: 01/20/2005
  • Status: Active Grant
First Claim
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1. A gunshot detection system comprising:

  • an array of sensors, at least one sensor of said array of sensors being a portable sensor that comprises;

    a microphone for receiving acoustic signals;

    a processor for processing received acoustic signals to detect an acoustic event;

    a first commercial GPS receiver for providing sensor position information; and

    a first network interface for transmitting the sensor position information;

    a mobile differential node comprising;

    a second commercial GPS receiver for providing GPS position information;

    a military GPS for providing more accurate position information;

    a CPU for calculating precision position information based at least upon the GPS position information and the more accurate position information; and

    a second network interface for transmitting the precision position information;

    a server comprising;

    a third network interface in communication with said first and second network interfaces; and

    a CPU for calculating a precise sensor position for said at least one sensor based on the sensor position information and the precision position information when said acoustic event is detected.

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