Accession Number : ADA297533

Title :   Detection and Localization Using Two Horizontally Separated Vertical Line Arrays.

Descriptive Note : Technical rept.,

Corporate Author : TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS

Personal Author(s) : Westwood, Evan K.

PDF Url : ADA297533

Report Date : 17 OCT 1994

Pagination or Media Count : 59

Abstract : A method for ASW detection and localization using two horizontally separated vertical line arrays is applied to the TAGEX 87 deep water data set. The method consists of beamforming the two vertical arrays and crosscorrelating the beamformer outputs. Application of the method to a 5 hr time period during which several ships pass near the two arrays results in clear detections of two ships. A correlagram fining procedure is used to localize the ships, and simulated beam-cross-beam correlagrams agree well with the measured data. Simulated signals from quiet sources are injected into the measured data, and detectability as a function of range and source level is investigated.

Descriptors :   *ACOUSTIC DETECTION, *BROADBAND, *SUBMARINE DETECTION, *ANTISUBMARINE WARFARE, *SEA TESTING, SIGNAL PROCESSING, OUTPUT, SIMULATION, SOURCES, SHIPS, CLOCKS, ARRAYS, VERTICAL ORIENTATION, SIGNALS, BEAM FORMING, LEVEL(QUANTITY), APERTURES, DEEP WATER, FLORIDA, QUIET, CROSS CORRELATION.

Subject Categories : Undersea and Antisubmarine Warfare
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE