Computer Aided Detection for Wideband Passive Sonar Systems.

摘要

A computer-aided detection processor has been developed for a wideband passive sonar system. The processor may be applied to a variety of passive systems. In addition to the individual processor, a general framework for a computer system that accepts and analyzes the vast quantity of data generated by a modern sonar suite has been developed. The output of this computer system is an array of alerting functions that measure the likelihood that a given coordinate vector is the location of a target. The computer-aided detection processor for wideband passive sonar systems is based on the Sequential Likelihood Ratio (SLR) hypothesis test. Methods were developed in this study to choose critical parameters of the processor and to analyze its performance. The wideband passive SLR processor outperformed a conventional processor in the sense of reducing the required input signal-to-noise ratio required for 0.5probability of detection at a given fixed probability of false alarm by several dB. The SLR processor is ideally suited for implementation on the output of passive sonar systems. (Author)