Peel, Vincent Robert (1991) Robust methods for passive sonar. University of Southampton, Doctoral Thesis.
Abstract
This thesis examines the problems associated with passive underwater detection through the use of sonobuoy arrays. The performance of new and existing high resolution techniques in the presence of calibration errors is of particular interest. As the performance of many high resolution techniques is considerably degraded in the presence of errors their estimation becomes an important subject. A new technique which can estimate the errors present on an array and is based on the maximum likelihood principle is proposed. The theoretical prediction of the performance of a well known and some new algorithms is presented in the presence of calibration errors. The predictions are shown to be in good agreement with actual results and it is seen that the new methods show promising performance in the presence of errors and with data averaged over few samples.
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