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- Calibration of Bi-hydrophone Used in Acoustic Intensity Measurement System 声强测量系统用双水听器的校准方法研究
- Research on the Application of Acoustic Intensity Measurement to Diesel Engine Noise Evaluation 应用声强测试技术对发动机噪声源识别的研究
- Discrete algorithms and simulation of the complex sound pressure reconstruction on holographic plane based on acoustic intensity measurement 全息面上基于声强测量复声压重构的离散算法与仿真
- acoustic intensity measurement 声强度测量
- Luminous intensity measurement and luminous range. 航标灯光强测量和灯光射程计算。
- With quick development of acoustic theory and increasing maturity of sound intensity measurement method, it is more and more important to develop a quick real-time sound intensity sampling and processing system. 随着声学理论的快速发展和声强测量方法的日益成熟,使得开发一种专用快速的实时数据采集与处理系统显得尤为必要。
- Acoustic intensity averager can effectively suppress isotropic non-coherent interference. 平均声强器的处理方法能很好地抗各向同性的非相干干扰;
- Disregarding systematic errors, acoustic intensity of sidescan sonar image shall be compared relatively. 在不考量侧扫声纳仪器本身的误差,海床影像的成像强度为相对性并非绝对。
- Based on acoustic intensity, the estimation of ship motion parameters is put froward, and a rapid algorithm is introduced. 基于声强矢量测量法提出了舰船目标运动参数的估计方法;并提出了快速算法.
- With the same amount of acoustic intensity and radiating time, the volumes of biological focal regions decreased with the increased depth of radiation. 在相同辐照声强和辐照时间时,所形成的HIFU生物学焦域体积随辐照深度的加深而变小;
- Acoustic intensity detection can efficiently estimate objective direction, and frequence partition, beam revolving and vector equations can differentiate multi-object. 声强检测可以有效地进行目标方位估计,利用频带划分、旋转波束、矢量方程组可以在一定程度上有效地解决多目标干扰的问题。
- 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。
- Based on the fact that different acoustic intensity distribution leads to different sidelobe,we can suppress sidelobe by changing the transducer geometry. 根据在声光相互作用通道上 ,声强分布不同 ,其旁瓣特性将不同 ,因此可通过改变换能器的形状来改变声强分布。
- In this paper, the basic principle of coded excitation is introduced. Through acoustic intensity analysis, the maximum improvement of SNR of ultrasonic image with coded excitation is deduced. 本文首先介绍了编码激励成像系统的原理 ,并对医学超声诊断系统中的发射声强进行了分析 ,得出了采用编码激励技术提高超声图像信噪比的上限。
- Based on the stress-strain relation energy relation and wave equation in Biot theory on acoustic propagation in a fluid-saturated porous medium,an equation of acoustic intensity is derived with the similar way used in an isotropic solid. 根据Biot多孔介质声学理论中的应力-应变关系、能量关系、声波方程,采用与在均匀固体介质中平行的方法,推导了流体饱和多孔介质中的声强表达式,进一步完善了多孔介质声学理论。
- Since the derivative operation is replaced with the limited differential one when calculating acoustic intensity of sources by using cross_spectrum, higher uniformity of the bi_hydrophone is needed. 利用双水听器组成声强探头进行声强测量是研究水下声源和结构振动声辐射特性的有效方法之一。
- The nation has taken intense measures to inhib the inflation. 那个国家采取了制止通货膨胀的激烈措施。
- The poem showed great intensity of feeling. 这篇韵文表现出强烈的激情。
- All intensity measurements using photometric units include a spectral bias (spectral response of the human eye). 运用光度计装量进行辐射强度测量都应包括一个光谱的偏倚(人眼对光谱的敏感度)。
- Padiation intensity measured by instrument at 100-150m above ground is no gu ide to the economic significance of an occurrence. 在100-150米高空用仪器测得的放射性不能说明矿点的经济价值。