| 舰船辐射噪声总声级及总能量的统计分析 |
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| 引用本文： | 田池,刘雨东,张宇.舰船辐射噪声总声级及总能量的统计分析[J].舰船科学技术,2012,34(8):83-86. |
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| 作者姓名： | 田池 刘雨东 张宇 |
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| 作者单位： | 1. 大连测控技术研究所 水下测控技术重点实验室,辽宁大连,116013
2. 大连测控技术研究所,辽宁大连,116013 |
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| 摘 要： | 在相同工况下,对于某一舰船辐射噪声总声级和总能量的多次测量结果来说,总声级的直方图分布比较对称,而总能量的直方图分布不对称.本文假设该舰船辐射噪声总声级多次测量值满足正态分布,利用非参数假设检验中的皮尔逊x2拟合检验和柯尔莫哥洛夫检验分别对其进行验证分析.结果表明,在显著性水平α较小时,总声级近似服从正态分布,进而得出总能量服从对数正态分布.结论在一定程度上给出了该舰船辐射噪声总声级及总能量的取值范围.
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| 关 键 词： | 总声级 皮尔逊x2拟合检验 柯尔莫哥洛夫检验 |
The statistical analysis of the total sound level and total energy of ship radiated noise |
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| TIAN Chi
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LIU Yu-dong
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ZHANG Yu.The statistical analysis of the total sound level and total energy of ship radiated noise[J].Ship Science and Technology,2012,34(8):83-86. |
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| Authors: | TIAN Chi LIU Yu-dong ZHANG Yu |
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| Institution: | 1.Science and Technology on Underwater Test and Control Laboratory,Dalian 116013,China;2.Dalian Scientific Test and Control Technology Institute,Dalian 116013,China) |
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| Abstract: | In the same condition,for the multiple measurements of the total sound level and the total energy of a ship radiated noise,the histogram distribution of the total sound level is symmetrical,while the histogram distribution of the total energy is asymmetric.This paper assumes that multiple measurements,of the total sound level of ship radiated noise,meet Normal Distribution,and it is verified by using nonparametric hypothesis test of Pearson χ2 and Kolmogorov.The results show that the total sound level is similar to Normal Distribution when α is small,and then derive that the total energy subjects to Log-Normal Distribution.The range of the total sound level and total energy of ship radiated noise is given in conclusion. |
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| Keywords: | total sound level Pearson χ2 fit test Kolmogorov test |
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