Study on Passive Acoustic Fuze in Wake Field of Ship with High Precision Recognition for High-Speed Small Target
Xiaohui He, Zhongle Liu, Zhiyong Yuan, Ruiqun Su · Journal of Physics Conference Series · 2021
Abstract It is proposed to adopt a new way against the incoming high-speed small target in the wake field of ship. The passive acoustic fuze composed by a ternary array can detect and receive a large number of signals with characteristic information, among which the intersection process between the incoming target and the acoustic fuze is regarded as the important characteristic information. Through analysis of delay estimation and the delay error according to the characteristics information received from the passive ternary array, such as the distance, the azimuth and the energy envelope, to improve the accuracy of location and azimuth. By means of the modified polynomial least square fitting method to eliminate outliers and interference from signals to improve the sharpness of the curve, to further fit the curve and to eliminate the negative impact from the change of data. An optimal initiation strategy is proposed based on the two above-mentioned aspects. Finally, it proved by tests that the proposed method has a certain value for reference.