Research on a port and starboard ambiguity conjugate cancelling method for twin-line array

作     者：WANG Fupo LI Shuqiu LI Yu HUANG Haining WANG Fupo LI Shuqiu LI Yu HUANG Haining (Institute of Acoustics,Chinese Academy of Sciences Beijing 100190)

作者机构：Institute of AcousticsChinese Academy of Sciences Beijing 100190 

出 版 物：《Chinese Journal of Acoustics》 (声学学报（英文版）)

年 卷 期：2010年第29卷第3期

页      面：277-284页

学科分类：0810[工学-信息与通信工程] 081505[工学-港口、海岸及近海工程] 08[工学] 0815[工学-水利工程] 081002[工学-信号与信息处理] 

基　　金：supported by the Knowledge Innovation Program of the Chinese Academy of Sciences and National Defense Research Projects(A1320070051) 

主　　题：line Research on a port and starboard ambiguity conjugate cancelling method for twin-line array DOA 

摘      要：It is always an important problem in sonar signal processing for towed array to distinguish the target between port and *** is studied in this paper the normalized beam output function for the parallel twin-line array and found a method that can enhance its port and starboard ambiguity suppression by equalizing the amplitude and phase of the beam output from the conventional beam *** method gets the weight value by analyzing the normalized beam output function,and then uses the amplitude weight and phase compensation for beam outputs of the twin arrays to cancel the conjugate（mirror） output. Therefore,the port and starboard restrain ratio is *** the computer simulation and sea trial data showed that this is a simple and practical method,can better enhance the port and starboard restrain ratio,especially when the band is wide.