PROCESSING OF DATA FROM SONAR SYSTEMS, VOLUME 4, SUPPLEMENT 1

Abstract

This Supplement and Volume IV examine performance of digital optimal and suboptimal detectors in an interference-dominated environment. Costs of clipping and sampling and the problem of recovering clipping losses are evaluated. Detection threshold variations dependent on measured noise parameters are also studied. Using noise power as a parameter shows non-parametric properties asymptotically independent of the noise amplitude distribution. Reduced dependency on noise properties can also be achieved by a zero count at each hydrophone. An active receiver using widely separated receivers for reverberation and noise-dominated conditions, and the effect of linear frequency modulation on the transmitted signal, are examined. Computation of ambient noise directivity is reported for shallow depths.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 27, 1967
Accession Number
AD0831579

Entities

People

  • F. S. Hill Jr.
  • Morton Kanefsky
  • Peter M. Schultheiss

Organizations

  • General Dynamics Electric Boat

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Ambient Noise
  • Bandwidth
  • Detection
  • Detectors
  • Doppler Effect
  • False Alarms
  • False Targets
  • Frequency
  • Frequency Modulation
  • Gaussian Noise
  • Geometric Forms
  • Geometry
  • Low Pass Filters
  • Power Spectra
  • Random Variables
  • Three Dimensional
  • Warning Systems

Readers

  • Acoustical Oceanography.
  • Acoustics.
  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.