Detecting modern diesel-electric submarines operating on batteries in littoral waters is very difficult using traditional
sonar technology due in large part to the noisy and reverberant acoustic environment. To address this issue, SI2
Technologies Inc. (SI2) has developed a small, low cost, short range, dual mode acoustic sensor. The sensors can be
deployed in large numbers (hundreds or thousands) to provide a high density sensor field depending upon the application
of interest. SI2's low cost sensors have a short detection range and therefore are far less susceptible to multi-path
reverberations and other acoustic artifacts. Simulation results will be presented showing that high probabilities of
detection (PD) can be achieved with low false alarm rates (FAR) using a field of a few hundred of these low cost sensors.
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