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BEM_Acoustics
边界元法，可以求解外声场、内声场,在此基础上可以开发出快速边界元法(boundary element method for acoustic problem)
- 2021-04-25 10:18:46下载
- 积分：1
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cvf_rter
Compaq Visual Fortran Error Messages，对于利用CVF编程的programmer是本很好的对照手册。(Compaq Visual Fortran Error Messages, programming, programmer for the use of CVF is a very good control of the manual.)
- 2011-05-23 11:52:50下载
- 积分：1
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hmqd
基于db8小波的,平移不变小波变换,层有关硬阈值滤波,(Based on db8 wavelet, translation invariant wavelet transform, layer related hard threshold filtering,)
- 2018-11-14 17:19:54下载
- 积分：1
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蚁群算法优化参数
说明： 蚁群算法优化随机共振参数，用于滚动轴承故障诊断(Ant colony optimization stochastic resonance parameters, bearing fault diagnosis)
- 2021-04-06 13:29:02下载
- 积分：1
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kfenbu
产生K分布随机变量以及产生的随机变量与K分布密度函数的拟合程度(Generate the K-distribution fitting degree of the random variable and the random variable with distribution density function of the K)
- 2012-07-16 14:43:45下载
- 积分：1
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invGreville
矩阵的广义逆计算，共两种方法，其中迭代法有一阶收敛和二阶收敛(generalized inverse matrix calculation, a total of the two methods, which iteration is a second-order convergence and convergence)
- 2006-10-29 13:10:38下载
- 积分：1
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high-resolution-one-dimension
高分辨率要求系统具有大的带宽，瞬时带宽的增加必将提高系统对硬件的要求，本文采用方便灵活的步进频率波形信号。脉间频率步进波形通过子脉冲载频的步进变化来获得大的有效带宽，使成像具有高分辨率，采用加窗和补零方法提高信噪比，但该信号对目标径向速度非常敏感。采用补零方法提高距离取样分辨率，使距离像细化，并用公式说明了补零只能提高距离取样分辨率，并不能改变频率步进信号的距离分辨能力。该信号波形对目标径向速度的敏感，使目标能量分散到邻近的距离单元造成距离分辨率下降，如果不事先进行速度补偿，直接对回波信号进行逆傅立叶变换，将使所成一维距离像发生频谱展宽，并伴有距离像发生平移。本文证明了当目标有径向速度时仍采用对回波信号直接进行逆傅立叶变换的方法将使一维距离像发生频谱展宽并伴有距离像发生频移，从而严重影响了一维距离像的质量。(high-resolution requirements of the system with large bandwidth, the increased instantaneous bandwidth will improve the system of hardware, In this paper, a flexible and convenient step frequency signals. Pulse frequency step-pulse waveform through the carrier frequency step to achieve great changes in the effective bandwidth. make imaging with high resolution, increasing the window and fill methods to improve signal-to-noise ratio is, However, the signal on the target radial velocity is very sensitive. Using zero-distance sampling method to improve resolution, so that distance as refinement, and formulates a zero-distance sampling can improve resolution, does not alter the frequency of the signal from stepping resolution capabilities. The signal waveform on the target radial velocity sens)
- 2007-04-07 22:15:33下载
- 积分：1
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数值分析实验
数值分析实验1.明确插值多项式和分段插值多项式各自的优缺点；
编程实现拉格朗日插值算法，分析实验结果体会高次插值产生的龙格现象；(Experiments of numerical analysis 1. Define the advantages and disadvantages of interpolation polynomials and piecewise interpolation polynomials. The Lagrange interpolation algorithm is programmed, and the Runge phenomenon produced by high-order interpolation is analyzed.)
- 2019-04-30 22:30:36下载
- 积分：1
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LBM 封闭腔体自然对流
封闭方腔自然对流格子布尔兹曼程序，在瑞利数为2000及4000时的两种算例，包括说明文字。(Closed square cavity natural convection lattice Boltzmann method)
- 2021-03-19 05:29:19下载
- 积分：1
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journal-bearing
有限差分法的径向滑动轴承求解，可用于求解油膜厚度、油膜压力等(Radial sliding bearings for solving finite difference method can be used to solve the oil film thickness, oil pressure, etc.)
- 2021-03-09 20:19:27下载
- 积分：1
