A method for detecting radiated and reflected acoustic signals from an unwater source, wherein the acoustic signals are present in a random noise environment and form an output therewith. The method includes the steps of operating an entropy-based acoustic receiver to receive the output, calculating...http://www.google.fr/patents/US5668778?utm_source=gb-gplus-shareBrevet US5668778 - Method for detecting acoustic signals from an underwater source
Method for detecting acoustic signals from an underwater source