Operator-Interactive Signature Formation for Acoustic Undersea Surveillance Systems
Abstract
This report describes an exploratory development for systematic organization of acoustic signals detected by multi-beam Undersea Surveillance Systems into the acoustic signature of ships. The concept, termed 'operator- interactive signature formation', combines the observational power of a human operator with the storage and computational power of the computer. The interaction consists of a human operator proposing candidate harmonic series by indicating one or more harmonics of that series with a cursor or hand-held pointer on an acoustic display on a CRT screen. (Signal detection and parameter estimation are accomplished by existing algorithms prior to display). Subjective interpretations by the operator are not permitted. Ambiguities in the signature formation process are resolved by executing appropriate signal processing algorithms. Organization of the detected signals begins with identifying non-ship interfering signals, proceeds through harmonic set formation to combination of harmonic sets into signatures, and finally to highly automated 'steady state' maintenance.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1977
- Accession Number
- ADC012205
Entities
People
- William P. Morrogh
Organizations
- United States Naval Research Laboratory