Accession Number:

AD0673838

Title:

ON THE DETECTION OF A KNOWN SIGNAL IN SEA NOISE.

Descriptive Note:

Technical rept.,

Corporate Author:

DUKE UNIV DURHAM N C DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1968-05-01

Pagination or Media Count:

54.0

Abstract:

The purpose of this report is to further the theory of signal detectability in underwater acoustics. A non-stationary statistical model for ocean noise is presented, utilizing the concept of an n-dimensional vector-sample n samples considered at a time. The standard deviation of the noise is assumed to be Rayleigh distributed. This noise model is then used in the design of a likelihood ratio receiver for the known-signal case. A performance comparison of this likelihood ratio receiver with a design assuming stationary Gaussian noise a correlator shows that the receiver design assuming the nonstationary ocean noise model is the superior one when both are operated in a shallow-water noise environment. Author

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE