ON THE DETECTION OF A KNOWN SIGNAL IN SEA NOISE.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1968
- Accession Number
- AD0673838
Entities
People
- Charles P. Hatsell
Organizations
- Duke University