1) acoustic intensity vector
声强向量
1.
Study on theory and experiment of acoustic source bearing with acoustic intensity vector;
声强向量法对声源定向的理论和实验研究
2.
Then, the passive tracking of a ship are made and its longitudinal size is estimated with the help of an acoustic intensity vector method.
然后 ,应用声强向量作为观测量 ,在晃动观测平台上对舰船目标进行了被动跟踪和尺度估计。
2) Sound intensity vector
声强向量
1.
This array can find the 2D DOA of a low frequency acoustic source with high precision based on the sound intensity vector measurem.
提出了一种可在水雷上安装的非典型声强向量阵-间距可调的空间十字阵,它由空间正交形状的四个水听器基元组成,通过测量水下声强向量实现小尺度条件下低频声源的高精度被动定向。
3) vector sound intensity array
声强向量阵
1.
The method to determine the bearings of the three highlight sections of a ship based on a non-typical vector sound intensity array was proposed.
提出一种非典型形式的声强向量阵—不等间距的空间十字阵,它由空间正交、间距可调的4个声基元组成,便于工程应用;并提出在同一个空间十字阵上联合使用声强向量法和时延估计法对舰船体积目标3亮点部位定向的方法。
2.
A non-typical vector sound intensity array is presented here.
提出了一种非典型声强向量阵形,它由空间正交、间距可调的四个声基元组成,可方便的安装在小尺度水下探测平台上,实现低频声源的三维空间被动定向;分析了系统的有限差分误差、各通道的相位失配和海洋环境噪声引起的定向误差。
4) non-typical vector acoustic intensity array
非典型声强向量阵
1.
A scheme was proposed for the bearing estimation of the separate sections of a volume target with a non-typical vector acoustic intensity array.
舰船在近距离上应视为体积目标,提出利用非典型声强向量阵对体积目标各部位定向的基阵共用技术。
6) sound intensity measurement
声强测量
1.
Application of sound intensity measurement in noise control for generating set;
声强测量技术在发电机组噪声控制中的应用
2.
In this paper,the application of the sound intensity measurement and analysis technique into noise control of an 3kw gasoline generating set is presented.
本文介绍了声强测量分析技术在某 3kW汽油发电机组噪声控制中的应用 ,作者利用CUSI Ⅱ型声强测量分析系统对该汽油发电机组进行了噪声源识别 ,快速准确地找到了其主噪声源。
3.
The influence of the DFT leakage errors on the sound intensity measurement is analyzed and the simulation examples are presented.
分析DFT泄露误差对声强测量的影响,进行模拟计算。
补充资料:声强级
某点声强i与基准声强i0之比的常用对数乘以10。即声强级li=10lgii0。单位为分贝。式中基准声强为10-12瓦/米2,是人耳刚能产生听觉的最弱声音,其声强级为零分贝。轻声交谈时的声强级约为10~20分贝,打雷、放炮时的声强级可达110~120分贝。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条