The interference characteristics of platform and towed body noise in shallow water for active/passive towed array sonar  

作　　者：LI Qihu LI Shuqiu SUN Changyu YU Huabing 

机构地区：[1]Institute of Acoustics, The Chinese Academy of Sciences Beijing 100080

出　　处：《Chinese Journal of Acoustics》2007年第3期193-197,共5页声学学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China (No.60532040).

摘　　要：The interference characteristics of towed platform noise resulted from propeller and towed body for active/passive towed array is analyzed. It is shown that, in shallow water environment, the direct wave and bottom/sea surface reflected wave will seriously affect the performance of sonar system. The formula for calculating the direction of arrival （DOA） of interference in terms of various parameters, such as array depth, length of tow cable, is derived. The effect of interference noise for the detection performance of sonar system is described. The results of system simulation provide the method for reducing the effect of these kind of interferences.The interference characteristics of towed platform noise resulted from propeller and towed body for active/passive towed array is analyzed. It is shown that, in shallow water environment, the direct wave and bottom/sea surface reflected wave will seriously affect the performance of sonar system. The formula for calculating the direction of arrival （DOA） of interference in terms of various parameters, such as array depth, length of tow cable, is derived. The effect of interference noise for the detection performance of sonar system is described. The results of system simulation provide the method for reducing the effect of these kind of interferences.

分 类 号：O427.5[理学—声学]