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噪声场
相关语句
  noise field
     Interior noise field of a viscoelastic cylindrical shell excited by the TBL pressure fluctuations: Ⅰ. production mechanism of the noise
     TBL压力起伏激励下粘弹性圆柱壳内的噪声场:Ⅰ.噪声产生机理
短句来源
     Interior noise field of a viscoelastic cylindrical shell excited by TBL pressure fluctuations: Ⅱ. finite hydrophone and array
     TBL压力起伏激励下粘弹性圆柱壳内的噪声场:Ⅱ.有限水听器和阵
短句来源
     Measurements and analyses of infrasound noise field in the atmosphere
     次声噪声场的测量与分析
短句来源
     (2) in anisotropic noise field, gain of active acoustical intensity is determined by anisotropy of spatial distribution of noise field.
     有功声强的空间增益与时间带宽积有关,(2)在各向异性场中,有功声强的空间增益取决于噪声场的空间分布。
短句来源
     The modeling and simulation of Target noise field
     目标噪声场建模与仿真研究
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  noise filed
     This paper presents the methods and models of self-noise filed and ambient-noise filed simulation in hardware-in-the-loop simulation. The way of isotropic and non-isotropic noise filed simulation is discussed and the correlation of beam is analyzed in the paper.
     该文通过对鱼雷自导航行自噪声与环境噪声的仿真与试验研究 ,对半实物仿真航行自噪声与环境噪声的方案进行了论证与分析 ,讨论了各向同性噪声场与非各向同性噪声场的空间相关性与仿真生成的方法 ,并对基阵波束相关性进行了相应的分析
短句来源
  noise fields
     The performance of traditional DOA estimation methods becomes worse in the correlated noise fields. A UST-MUSIC algorithm based on unitary spatio-temporal correlation matrices is presented.
     针对传统波达方向(directionofarrival,DOA)估计方法在噪声相干时估计性能下降的现象,提出一种基于空时相关矩阵酉变换的UST MUSIC算法对相干噪声场中的DOA进行估计。
短句来源
     Spacial frequency domain reconstruction method for acoustic holography analysis of noise fields
     声全息分析噪声场的空间频域重建算法
短句来源
     Acoustic holography is an effective method to analysis noise fields.
     声全息方法是分析噪声场的一种有效手段。
短句来源
     According to the different distributions of noise fields how to increase the noise-cance-lling ability is analyzed theoretically.
     根据不同的噪声场分布情况,就如何提高抗噪声送话器的抗噪能力进行了理论分析。
短句来源
     The second method is based on unitary spatio-temporal correlation matrices with the aim to improve the performance of MUSIC algorithm in the correlated noise fields;
     针对传统DOA估计算法在相干噪声场中估计性能下降的问题,提出了利用空时相关矩阵酉变换的UST-MUSIC算法进行改进;
短句来源
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  “噪声场”译为未确定词的双语例句
     2—8 GHz Broaclbnd Low Noise GaAs MESFET Awplifier
     2—8GHz宽带低噪声场效应放大器
短句来源
     Design of Low-Noise Field Amplifier with the Aid of EESOF Workstation
     用EESOF工作站设计低噪声场
短句来源
     This paper briefs the utilization of EESOF workstation to design low noise amplifiers and presents the advantages and application of using the EESOF workstation to design microwave and RF circuits.
     简要阐述利用 EESOF工作站设计低噪声场放 ,指出了在微波与射频电路设计方面 EESOF工作站具有的优越性及应用的广泛性
短句来源
     The general expression was given of space-time correlation function of a noise-field dependent on the refraction index of medium, boundary conditions and the space-time characters of the noise sources.
     的工作,建立了在所讨论区域内有源的情况下噪声场时空相关函数所满足的微分方程,并给出噪声场时空相关函数依赖于各种水文条件、边界条件与噪声源时空特性的普遍表式.
短句来源
     The Ffowcs Williams-Hawkings (FW-H)equation was employed to predict the far field noise caused by these sources.
     以声学中的Ffowcs Williams-Hawk-ings(FW-H)方程作为出发方程,数值求解贯流风机的噪声场
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  noise field
It is shown that the methods based on the spatial filtering of the noise field offer the greatest promise.
      
Noise field anisotropy of surface sources in a coastal region with arbitrary bottom relief and sound velocity profile
      
The noise field anisotropy of surface sources in a coastal region with an arbitrary three-dimensional bottom relief and an arbitrary sound velocity profile is investigated.
      
The computations show that, in the coastal region, the noise field is essentially anisotropic, and this anisotropy occurs not only in the vertical plane, which is characteristic of the deep ocean, but in the horizontal plane as well.
      
The design is based on the widely discussed method of estimating the Green's function from the cross-coherence function of noise field received in a great number of observation points.
      
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  noise fields
Maxima of Subexponential Shot-Noise Fields with Finite Radius of Influence
      
We study the asymptotic behavior of the maxima of shot-noise fields on bounded measurable domains tending to infinity in the sense of van Hove.
      
We study its applications to large jumps in random walks and to extrema of shot-noise fields in the case of regularly varying tails.
      
We study its applications to large jumps in random walks and to extrema of shot-noise fields in the case of regularly varying tails.
      
A novel approach for DOA estimation in unknown correlated noise fields
      
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The differential equation satisfied by the noise-field, in a space containing noise sources, was derived. The general expression was given of space-time correlation function of a noise-field dependent on the refraction index of medium, boundary conditions and the space-time characters of the noise sources. Some particular cases were calculated.

本文推广了 Eckart C.的工作,建立了在所讨论区域内有源的情况下噪声场时空相关函数所满足的微分方程,并给出噪声场时空相关函数依赖于各种水文条件、边界条件与噪声源时空特性的普遍表式.文中并计算了几种特殊情况的噪声场时空相关函数.

In this paper a model for underwater acoustic channels is established. By means of this model a general expression is derived for the space-time correlation function produced by a noise source in random multipath dispersion channels.

本文把传播的随机时变网络模型用于水声信道,建立了噪声辐射场的时空相关函数的一般表示式。讨论了时变、多径、色散水声信道下噪声场时空相关函数的时变、起伏与衰落。

Modern supersonic aeroplanes produce a high-intensity noise level up to 155 dB near the jet nozzles, which is enough to cause acoustical fatigue and failure. We used the electro-pneumatic loudspeaker coupled directly to the travelling-wave tube to produce about 165-170 dB of the high-intensity random sound field in the test section. This paper studied experimentally for three types of the metal sheets, i.e. type Lyl2-CZ-δ0.8, type Lyl2-CZ-δ1.0 and type (?)1T-0.6. Under such sound field, we observed the whole...

Modern supersonic aeroplanes produce a high-intensity noise level up to 155 dB near the jet nozzles, which is enough to cause acoustical fatigue and failure. We used the electro-pneumatic loudspeaker coupled directly to the travelling-wave tube to produce about 165-170 dB of the high-intensity random sound field in the test section. This paper studied experimentally for three types of the metal sheets, i.e. type Lyl2-CZ-δ0.8, type Lyl2-CZ-δ1.0 and type (?)1T-0.6. Under such sound field, we observed the whole process) of the crack initation, growth, propagation and failure, and compared the acoustical fatigue of the different structures and obtained experimentally the Lp-t curves of the 0.8mm and 1.0mm allumiun sheets, and 0.6 mm stainless steel sheet.

近代高速喷气飞机喷口附近的噪声级高达155分贝.由于在整个飞行过程中飞机尾部处在强噪声环境中,薄板结构因声致振动而产生声疲劳和断裂。我们用气流扬声器直接耦合到行波管,在测试段产生165—170分贝的无规噪声场。对 Ly_(12)-CZ-δ_(0.8),Ly_(12)-CZ-δ_(1.0)和RIT-0.6三种薄板进行了实验研究:观察了裂纹出现和扩展的全过程,比较了不同结构的声疲劳特性,并由实验初步归纳出表述0.8毫米和1.0毫米铝合金板和0.6毫米不锈钢板的噪声场声压级和断裂时间(L_p-t)的关系。

 
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