On the Use of Double FM Pulses for Detection of Targets and Measurement of Their Properties

Abstract

This report discusses the use of double FM pulses to measure the sonar path length and rate of change of sonar path length (range and range rate in the monostatic case) and length and rate of change of length or apparent turning rate for a long thin target such as a submarine. Equations are derived for the standard deviations of the errors of such measurements. It is shown that for coherent processing roof top double FM pulses are preferred while for incoherent processing parallel, double FM pulses are preferred. This report further discusses the use of two hydrophones with the double FM pulse to measure, in addition to the above, bearing and aspect of the target. In this case coherent spatial processing is used that is exactly analogous to the coherent temporal processing. Again equations for the standard deviations of the errors in these measurements are derived.

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1981
Accession Number
ADA115701

Entities

People

  • Lewis Meier

Organizations

  • SACLANT ASW Research Centre

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Ambiguity
  • Cross Correlation
  • Data Science
  • Detection
  • Doppler Effect
  • Extraction
  • Filters
  • Frequency
  • Frequency Bands
  • Frequency Shift
  • Gaussian Distributions
  • Matched Filters
  • Measurement
  • Nato
  • Signal Processing
  • Two Dimensional

Readers

  • Acoustical Oceanography.
  • Radar Systems Engineering.