Localization of Multiple Broadband Targets in Spherical Coordinates via Adaptive Beamforming and Non-Linear Estimation

Abstract

Computer simulation studies of two frequency domain adaptive beamforming algorithms for planar arrays are presented. The algorithms are modified complex LMS adaptive algorithms that can process an arbitrary number of harmonics. The algorithms provide estimates of the spherical coordinates (i.e., range, depression angle, and bearing angle) of multiple broadband targets in both the near-field and far-field. Computer simulation results comparing the average estimation error for range, depression angle, and bearing angle as a function of the input SNR, range (near-field and far-field), and harmonic number, are presented. The full angular coverage capability of the algorithms was also tested. Theses. (RRH)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1989
Accession Number
ADA215714

Entities

People

  • Richard P. Breckenridge

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

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

DTIC Thesaurus Topics

  • Acoustic Signals
  • Acoustics
  • Algorithms
  • Computer Simulations
  • Depression Angles
  • Far Field
  • Frequency
  • Frequency Domain
  • Geometry
  • Near Field
  • Signal Generation
  • Signal Processing
  • Simulations
  • Spherical Waves
  • United States
  • United States Naval Academy
  • Wave Propagation

Fields of Study

  • Engineering

Readers

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