Underwater acoustic model-based signal processing applied to the detection of signals from a planar array of point source elements
Loading...
Authors
Blount, Richard J. Jr.
Subjects
SONAR
Model-Based
Signal Processing
Planar Array
Correlator Receivers
Model-Based
Signal Processing
Planar Array
Correlator Receivers
Advisors
Ziomek, Lawrence J.
Date of Issue
1985-09
Date
Publisher
Naval Postgraduate School: Monterey, California
Language
en_US
Abstract
A computer simulation of a correlator receiver was
developed and exercised to study the impact of a model-based
signal processing algorithm on the detection of transmitted
CW and LFM pulse acoustic signals incident on a planar array
of electroacoustic transducers. The model of the ocean
communication channel incorporates a space-variant sound
speed profile. The transducer output electrical signals are
cophased by an FFT beamformer via phase weighting, and
summed to form a total array output signal. The total array
output signal is correlated with a delayed replica of the
transmit waveform and compared to a Neyman-Pearson threshold.
Receiver performance is measured using a Monte Carlo
technique to estimate the probability of detection for a
fixed probability of false alarm versus the signal-to-noise
ratio at the input of a single transducer. White, zero-mean,
Gaussian transducer noise is assumed to facilitate comparison
between theoretical and simulated performance. Results
indicate that model-based signal processing provides significant
improvement of receiver performance.
Type
Thesis
Description
Series/Report No
Department
Electrical Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.