Photoelectricity Feature of Submarine and its Development of Detection Technology

As one of the most important antisubmarine warfare of U.S.navy,the equipments and arms of P-3C is summarized herein.The surface features of wake behind a moving body underwater including cold and thermal feature and the statistic features of the sea are analyzed.The development of concealment capability technology is summed up.The research has some value on antisubmarine detection technology and stealth technology.