Underwater acoustic model-based signal processing
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Authors
Ziomek, Lawrence J.
Blount, Richard L. Jr.
Subjects
Underwater acoustics
Acoustic signal processing
Signal processing algorithms
Oceans
Context modeling
Chirp modulation
Pulse modulation
Array signal processing
Computer simulation
Acoustic testing
Acoustic signal processing
Signal processing algorithms
Oceans
Context modeling
Chirp modulation
Pulse modulation
Array signal processing
Computer simulation
Acoustic testing
Advisors
Date of Issue
1987-12
Date
December 1987
Publisher
IEEE
Language
Abstract
An underwater acoustic model-based Signal processing algorithm is presented. Its performance was evaluated via computer simulation of various test cases and compared to that predicted by theory. The model-based algorithm, which is used in conjunction with an FFT beamformer for planar arrays, computes phase weights that correct for deterministic, ocean medium, phase effects due to ray bending as a signal propagates in the inhomogeneous ocean medium whose index of refraction (sound-speed profile) is a function of depth. The performance of the model-based signal processing algorithm was evaluated in the context of an underwater acoustic communication problem in order to determine the impact of the model-based algorithm on the probability of detecting single rectangular-envelope continuous wave (CW) and linear frequency modulated (LFM) pulses as a function of the input signal-to-noise power ratio at a single element in the receive array for a given probability of false alarm. Preliminary results for various test cases show significant increases in performance for a correlator receiver.
Type
Article
Description
The article of record as published may be found at https://doi.org/10.1109/TASSP.1987.1165088
Series/Report No
Department
Electrical and Computer Engineering (ECE)
Organization
Identifiers
NPS Report Number
Sponsors
This work was supported by DARPA
Funder
Format
14 p.
Citation
Ziomek, L., and R. Blount. "Underwater acoustic model-based signal processing." IEEE Transactions on Acoustics, Speech, and Signal Processing 35.12 (1987): 1670-1683.
Distribution Statement
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.