非主轴宽带辐射噪声测量线列阵的性能仿真

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (9) : 176-180.

论文

非主轴宽带辐射噪声测量线列阵的性能仿真

方尔正，李冬方

作者信息 +

Performance Simulation of Nonprime Axis Wideband Radiated Noise Measurement Line Array

Fang Er-zheng，Li Dong-fang

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文章历史 +

摘要

对采用线列阵系统的水下大型结构的辐射噪声测量原理进行了讨论，分析了测量的要素，对非主轴方向上的目标辐射噪声测量进行了建模，给出了非主轴方向的宽带波束形成方法。通过计算机仿真，得到了主波束宽度、阵元数和阵增益之间的关系，并对计算机仿真结果进行了比较，该结果对浅海条件下的线列阵水下大型结构辐射噪声测量具有一定的指导意义。

Abstract

The measurement principle and key elements of underwater radiated noise measurement system based on large-size line array are discussed in this paper. The radiated noise measurement in nonprime axis direction was modeled and the wideband beam forming in the nonprime axis direction is presented. The relations of the main-beam width, the numbers of array and array gain both in prime and nonprime axis direction were obtained by computer simulation and comparison of computer simulation results. These results provide reference for radiated noise measurement of underwater large-size line array under the condition of shallow water.

导出引用

方尔正;李冬方. 非主轴宽带辐射噪声测量线列阵的性能仿真[J]. 振动与冲击, 2012, 31(9): 176-180

Fang Er-zheng;Li Dong-fang. Performance Simulation of Nonprime Axis Wideband Radiated Noise Measurement Line Array[J]. Journal of Vibration and Shock, 2012, 31(9): 176-180