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acoustic tomography

  • Therefore, there are no problems such as parameters interpolation, singular integration etc. in WSA based acoustic holography, which are inherent to BEM based NAH.

    因而基于波叠加声全息存在边界面上的参数插值奇异积分问题而这些问题基于边界声全息所固有的。

    http://dj.iciba.com

  • The principle of WSA based acoustic holography is easier to understand, and it is more amiable to implement on the computer.

    基于边界元法声全息相比较,基于波叠加法的声全息原理易于理解计算机容易实现

    dict.cnki.net

  • This paper introduces the common methods in identifying vehicle noise, and gives a introduction of the method of acoustic holography which has been extensively applied now.

    作者介绍了识别汽车噪声源常用方法其中得到广泛应用声全息进行了详细论述

    www.dictall.com

  • The study on the holographic reconstruction and prediction of a semi-free field is valuable for the practical applications of the acoustic holography technique.

    自由声场环境下的声源重建声场预测研究声全息技术走向实际应用具有非常重要意义

    dict.cnki.net

  • The acoustic holography technique for sound source identification and position by the method of continuously scanning improves the previous acoustic holography experiment.

    连续扫描声全息声源识别定位技术以往声全息实验方法改进

    www.dictall.com

  • The theory of holography and its applications in acoustic levitation field reconstruction and optical metrology are presented in this thesis.

    本文理论实验两方面详细探讨全息干涉度量术的原理及其记录、再现以及重建悬浮方法手段。

    dict.cnki.net

  • dict.cnki.net

  • Acoustic holography is an effective method to analysis noise fields.

    声全息方法分析噪声一种有效手段

    dict.cnki.net

  • The distributed source boundary point method(DSBPM) based nearfield acoustic holography(NAH) is used for identifying and localizing noise sources of the roots vacuum pump.

    采用基于分布边界点法的近场声全息技术对运转状态下罗茨真空泵进行噪声源识别定位研究。

    dict.cnki.net

  • Sound field separation technique has been proposed, which overcomes the limitation on applications of near_field acoustic holography (NAH).

    提出空间声场分离技术突破了声全息NAH应用局限

    dict.cnki.net

  • A new method based on interpolation using orthogonal spherical wave source was proposed to enhance the resolution of the nearfield acoustic holography image without adding measurement points.

    为了在增加测量点数的情况下提高近场声全息图像空间分辨率提出基于正交球面插值近场声全息图像分辨率增强方法

    www.dictall.com

  • The acoustic field separation technique of the statistically optimal cylindrical nearfield acoustic holography has also been developed.

    针对柱面内外辐射问题,分别推导了统计最优柱面内、外近场声全息技术理论公式

    dict.cnki.net

  • According to the principle of near-field acoustic holography (NAH), the system of data acquisition and analysis needed in holographic experiments have been constructed.

    根据声全息NAH原理建立全息实验所需要采集分析系统

    www.dictall.com

  • Acoustic holography has attained a high lateral resolution but a poor axial resolution.

    全息摄影技术已经取得较高横向分辨率轴向分辨率并不理想

    www.dictall.com

  • The results demonstrated that near-field acoustic holography and underwater near-field measurement method based on the vector array is applicable and powerful.

    本文方法水中潜艇噪声源识别预测提供了可靠依据,为实际工程推广应用打下基础

    www.boshuo.net

  • An experimental study on the distributed source boundary point method based nearfield acoustic holography;

    本文利用边界方法振动体外部辐射问题进行研究

    www.dictall.com

  • An experimental study on the distributed source boundary point method based nearfield acoustic holography;

    本文利用边界方法振动体外部辐射问题进行研究

    www.dictall.com

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