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小波降噪、时频分析等方法，系统地研究航天电子设备多余物噪声检测过程中各操作变量和微粒物理参数对声波频谱的影响。通过单因素试验，详细分析了微粒粒径、振动力学条件中加速度和频率等3因素对声音信号频谱分布的影响规律，比较了短时傅里叶变换和小波变换的特点。该结果为进一步识别多余物微粒的参数提供了指导依据(the complexity of the material interaction and the properties of the particles themselves make the received signal difficult to analyse. This paper based on particle collision sound wave mechanism, using the methods of wavelet de-noising, time-frequency analysis and so on, this paper systematically studies the influence of various operating variables and particle physics parameters on the sound spectrum in the process of detecting the noise of aerospace electronic equipment. Through the single factor test, the influences of the three factors such as acceleration and frequency on the spectral distribution of the sound signal are analyse in detail, and the characteristics of the short-time Fourier transform and the wavelet transform are compared. The result provides a guideline for further identification of the parameters of the extraneous particles.)
- 2018-01-18 14:36:21下载
- 积分：1
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dataanalysis
数据分析以及数据回归，优化运行以及基本算例。(data analysis)
- 2015-01-28 20:16:18下载
- 积分：1
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Zhang-zhengyou-Camera-calibration
张正友摄像机标定matlab程序，用来求出摄像机的内外参数矩阵。(Zhang Zhengyou camera calibration matlab procedures used to calculate the camera' s internal and external parameter matrix.)
- 2013-11-14 16:10:59下载
- 积分：1
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primitive_root
说明： 计算任何数的所有本原根，并统计本原根的个数(Any calculation of the number of all primitive roots, and statistics the number of primitive roots)
- 2011-04-06 15:51:01下载
- 积分：1
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BVAR_Gibbs
贝叶斯分析，比较复杂的自回归分析。VAR模型，注意比AR要先进的多！(Bayesian estimation, prediction and impulse response analysis in VAR models using the Gibbs sampler.)
- 2021-04-07 11:49:01下载
- 积分：1
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Pendulum-Matlab6.5
便携式直线一级倒立摆MATLAB6.5版本程序，适合于初学Simulink者,包含所有S函数源代码(Portable straight line the inverted pendulum the MATLAB6.5 version of the program is suitable for novice Simulink, contains all S-function source code)
- 2013-01-08 14:06:22下载
- 积分：1
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froot
牛顿法求解一元三次方程的matlab 的程序，可以在十秒内求解任意一元三次方程(Newton s method for cubic equations)
- 2013-08-11 17:33:13下载
- 积分：1
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espritalgorithm
Simulation of ESPRIT
- 2015-03-09 18:11:32下载
- 积分：1
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ForwardingMultiset
ForwardingMultiset<E> extends ForwardingCollection Source Code for Andriod.
- 2014-01-07 16:35:03下载
- 积分：1
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matlabFDTD1dfdtd
在matlab上的FDTD程序关于一维时域有限差分(Matlab program on the one-dimensional FDTD finite difference time domain)
- 2010-10-14 15:16:29下载
- 积分：1
