Accession Number : ADA626739


Title :   Localization of Short Duration Periodic Signals


Descriptive Note : Patent application, Filed 30 Sep 2013


Corporate Author : NAVAL UNDERSEA WARFARE CENTER DIV NEWPORT RI


Personal Author(s) : Baggenstoss, Paul M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a626739.pdf


Report Date : 30 Sep 2013


Pagination or Media Count : 33


Abstract : A method for localizing signals of interest includes initializing characteristics of the signals. Signals are acquired from a sensor array having at least three acoustic sensors. After digitization and conditioning, the signals associated with each sensor are validated by comparison with initialized characteristics. The signals are correlated across sensor groups to obtain time differences of arrival (TDOA). These TDOA are validated and associated with other TDOA from different times. TDOA from different sensor pairs are associated when they share a common sensor. A hyperbola of possible locations is created for each validated TDOA. Summation of the hyperbolas gives an intensity function. The location is identified as the most intense point in the intensity function. The source can be tracked across time as a computer output.


Descriptors :   *ACOUSTIC SIGNALS , *SIGNAL PROCESSING , ACOUSTIC ARRAYS , PATENT APPLICATIONS , POSITION(LOCATION)


Subject Categories : Operations Research
      Cybernetics
      Acoustic Detection and Detectors


Distribution Statement : APPROVED FOR PUBLIC RELEASE