Multiply-Constrained MVDR Matched Field Processing With A-Posteriori Constraints for Enhanced Robustness to Mismatch

Abstract

It has been proposed that source localization in passive sonar be accomplished via some form of Matched Field Processing (MFP). Full-coherent, Minimum Variance Distortionless Response (MVDR) MFP assumes complete and perfect characterization of the underwater multipath propagation channel and is known to be extremely sensitive to mismatch between model parameters and actual environmental parameters. We present a minimax, multi-rank signal variation of MVDR MFP referred to as Semi-coherent MVDR MFP. Simulation results are presented demonstrating Semi-coherent MVDR MFP to be both relatively robust to mismatch, with respect to relative amplitudes and phases amongst multipath arrivals, and comparable in performance to Full-coherent MVDR MFP under no mismatch conditions.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1991
Accession Number
ADA244883

Entities

People

  • G. M. Kautz
  • M. D. Zoltowski
  • S. I. Chow

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acoustic Detection
  • Ambiguity
  • Amplitude
  • Arrays
  • Bottom Bounce
  • Bottom Loss
  • Computers
  • Detectors
  • Eigenvalues
  • Eigenvectors
  • Electrical Engineering
  • Engineering
  • Multipath Transmission
  • Ray Tracing
  • Seabed
  • Simulations
  • Simulators

Fields of Study

  • Engineering

Readers

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