Underwater acoustic model-based signal processing applied to the detection of signals from a planar array of point source elements

Download
Author
Blount, Richard J. Jr.
Date
1985-09Advisor
Ziomek, Lawrence J.
Second Reader
Powers, J.P.
Metadata
Show full item recordAbstract
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.
Collections
Related items
Showing items related by title, author, creator and subject.
-
GEANT4 SIMULATION OF FAST NEUTRON INTERACTIONS IN HEAVY OXIDE SCINTILLATORS
Batteson, Bruce (Monterey, CA; Naval Postgraduate School, 2019-09);Fast neutron detection is critical to the interdiction of illicit special nuclear material, among other potential applications. The use of heavy oxide scintillators to detect fast neutrons is one technology requiring little ... -
Detection of gamma-neutron radiation by solid-state scintillation detectors
Ryzhikov, V.; Grinyov, B.; Piven, L.; Onyshchenko, G.; Sidletskiy, O.; Naydenov, S.; Pochet, T.; Smith, C. (IEEE, 2015-07-01);It is known that solid-state scintillators can be used for detection of both gamma radiation and neutron flux. In the past, neutron detection efficiencies of such solid-state scintillators did not exceed 5-7%. At the same ... -
Performance analysis of the effect of pulsed-noise interference on WLAN signals transmitted over a Nakagami fading channel
Tsoumanis, Andreas (Monterey California. Naval Postgraduate School, 2004-03);of IEEE 802.11a standard. The signal is subject to pulsednoise jamming, when either the desired signal alone or the desired signal and the jamming signal are subject to Nakagami fading. As expected, the implementation of ...