Source Localisation using Lloyd's Mirror Fringes on Narrowband Lines

Abstract

The analysis of the Lloyd's mirror interference of multiple narrowband lines from a sound source obtained with a single sensor is considered. A straightforward global least squares optimisation is discussed. The analysis is based on a straight line trajectory model of the source motion, and is configured for any range independent propagating medium. Two methods are proposed, each being based on a discrete optimisation on a predefined parameter grid. These are a simulated annealing algorithm and a guided search method. The least squares cost function is defined in a manner independent of the intrinsic shape of each narrowband emission. Simulation data based on an ISO speed sound profile are used to explore the proposed analysis.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1997
Accession Number
ADA342862

Entities

People

  • Paul R. Lewis

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Algorithms
  • Annealing
  • Australia
  • Background Noise
  • Broadband
  • Control Panels
  • Detection
  • Detectors
  • Frequency
  • Frequency Shift
  • Geometry
  • Optimization
  • Simulations
  • Slant Range
  • Standards
  • Universities

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Fluid Dynamics.
  • Maritime Security/Maritime Homeland Security