非主轴宽带辐射噪声测量线列阵的性能仿真  

Performance simulation of line array in nonprime axis wideband radiated noise measurement

作　　者：方尔正 李冬方[1] 

机构地区：[1]哈尔滨工程大学,哈尔滨150001

出　　处：《振动与冲击》2012年第9期176-180,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金(40827003)资助项目

摘　　要：对采用线列阵系统的水下大型结构辐射噪声测量原理进行讨论,分析测量要素,对非主轴方向上的目标辐射噪声测量进行建模,给出非主轴方向宽带波束形成方法。通过计算机仿真,得到主波束宽度、阵元数和阵增益之间的关系,并对计算机仿真结果进行比较,该结果对浅海条件下线列阵水下大型结构辐射噪声测量具有一定指导意义。The measurement principle and key elements of underwater radiated noise measurement system based on large-size line array were discussed.The radiated noise measurement in nonprime axis direction was modeled and the formation of wideband beam in nonprime axis direction was presented.The relations between the main-beam width,the numbers of array and the array gains both in prime and nonprime axis directions were obtained by computer simulation and comparison of simulation results.These results provide reference to the radiated noise measurement of underwater large-size line array under the condition of shallow water.

关 键 词：非主轴 宽带波束形成 辐射噪声测量 线列阵 

分 类 号：TB566[交通运输工程—水声工程]