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Considering the difference between high speed underwater vehicle and non-high speed underwater vehicle in the spectrogram of radiated noise, the researches on image edge detection and features extraction has been done. The SCQS(Straight-line Characteristic Quantity of Spectrogram) is definition. A method, based on image edge detection and features extraction, is put forward to get the characteristic quantity of high speed underwater vehicle and applied to researches of classification of high speed underwater vehicle. The experimental results show that the method, which can extract the features of spectrogram well, can provide a dependable characteristic to classification and early-warning of high speed underwater vehicle.

Application Of Image Edge Detection In Underwater High Speed Vehicle Classification