matlab

id3 in machin learning

温度变化对光纤光栅布拉格波长的影响，通过二维图像表示出。(The impact of temperature change on the optical fiber grating Bragg wavelength is shown through the two-dimensional image.)

利用matlab实现光纤的模式分布图的模拟。(Using matlab to achieve mode fiber distribution simulations.)

对复小波提取高频及低频的系数 并对相应的实小波的系数也进行了提取(Extraction of complex wavelet coefficients of high frequency and low frequency And the corresponding real wavelet coefficient were extracted )

CACAL Calibration routine for computing the camera parameters using weighted least squares. The initial values are solved by using the DLT method and the final parameter values are obtained iteratively

《MATLAB小波分析（第2版）》张德丰源代码下载(" MATLAB Wavelet Analysis (2nd Edition)" Zhang Defeng Source Codes)

通过虚拟阵元进行DOA估计，基于分段非线性权重值的Pso算法，基于SVPWM的三电平逆变的matlab仿真，这个有中文注释，看得明白，计算多重分形非趋势波动分析，现代信号处理中谱估计在matlab中的使用。( Conducted through virtual array DOA estimation, Based on piecewise nonlinear weight value Pso algorithm, Based on SVPWM three-level inverter matlab simulation, The Chinese have a comment, understand it, Calculate the multifractal trend fluctuation analysis, Modern signal processing used in the spectral estimation in matlab.)

Wigner-Ville 分布(简称 WVD)是典型的二次型变换，它定义为信号瞬时相关函数的傅立 叶变换。 由于在计算中不加窗操作，它避免了时域分辨率和频域分辨率之间的相互牵制。 已证明，对于单分量线性调频信号，WVD 的时频表示能量集中性最优。但也正因为不涉 及窗函数，在分析多分量信号时 WVD 会受到交叉项的干扰。(The Wigner-Ville distribution (WVD) is a typical quadratic transformation, which is defined as the Fourier of the instantaneous correlation function of a signal. Ye Bianhuan. Because of no window operation in the calculation, it avoids the mutual restraint between time domain resolution and frequency domain resolution. It has been proved that for the single component LFM signal, the WVD time frequency representation has the best energy concentration. But it is also because it does not involve. And window functions, when WVD is used to analyze multi-component signals, it will be interfered by cross terms.)

2-D median filtering with better boundaries response. A modified version of the MATLAB function medfilt2 that deals better with the boundaries. Unlike medfilt2, the function medfilt2m does not pad the matrix with extra elements on the edges, but computes the median using only elements in the matrix.

简单的OFDM流程，使用matlab自带的QAM函数，适合初学者(OFDM simple process, using the built-in QAM matlab function, suitable for beginners)