The Recent Multiple Sound Sources, Sound Detection In The Atmosphere Positioning Technology

The intelligent mine has been the most efficient weapon to attack armed objects flying in low sky such as helicopters and cruise missiles . Localization of multiple target's sources by a single small detection system is complex and difficult problem which is urgent to be solved .The paper dedicates a new algorithm to localize multiple sources applying TDE(time-delay estimation).By associating all time delays among two microphones of the array , parameters of position of multiple sources can be uniquely decided.The paper also comes up with an original method-cluster of plane density- for post-processing the time delay data. This method improves the accuracy of time delay which is undermined by adverse factors such as environment problem and property of signal emitting from helicopters and improves the accuracy of localization.At last, this paper deals with some other methods of localization of multiple sound sources such as beamforming and subspace method.