Localization of multiple broadband targets in spherical coordinates via adaptive beamforming and non-linear estimation
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Authors
Breckenridge, Richard P.
Subjects
Target localization in spherical coordinates
Sonar signal processing
Frequency domain adaptive beamforming
Non-linear least-squares estimation
Sonar signal processing
Frequency domain adaptive beamforming
Non-linear least-squares estimation
Advisors
Ziomek, Lawrence J.
Date of Issue
1989-06
Date
June 1989
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
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.
Type
Thesis
Description
Series/Report No
Department
Engineering Acoustics Academic Group
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
97 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.