Accession Number : ADA117632

Title :   Detection Threshold Calculations for Cross Correlation Processing.

Descriptive Note : Technical memo.,

Corporate Author : NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT NEW LONDON LAB

Personal Author(s) : Mikhalevsky,Peter N

PDF Url : ADA117632

Report Date : 18 Mar 1980

Pagination or Media Count : 27

Abstract : Detection threshold calculations are performed for cross correlation processing of the received signals from two fixed omnidirectional sensors of a moving source generating an arbitrary random power spectrum. The effects of doppler decorrelation and volumetric absorption, and the degradation as a result of multiple bottom bounce and surface reflections are included. The equations for ROC curves are presented. A computer program which accepts as input the source power spectrum, noise power spectrum, averaging time, frequency analysis band, and sensor baseline separation solves for the detection threshold given a .5 probability of detection and .001 probability of false alarm. (Author)

Descriptors :   *Cross correlation, *Threshold effects, *Underwater sound signals, Signal processing, Omnidirectional, Bottom bounce, Doppler effect, Acoustic detection, Power spectra

Subject Categories : Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE