chambolle-projection

利用MATLAB进行图像滤波技术，包含理想低通，高通滤波器和巴特沃思低通，高通滤波器的设计(Using MATLAB for image filtering techniques, including the ideal low-pass, high pass filter and Butterworth low-pass, high pass filter design)

Duffing系统的时域谱图和相空间轨迹绘制，能够帮助初学者很好的理解典型非线性特征(duffing equation Phase plane trajectory)

说明：  逆合成孔径雷达成像代码，二维雷达成像，雷达回波数据去噪方法，SVD分解。(Inverse synthetic aperture radar imaging code, two-dimensional radar imaging, radar echo data denoising method, SVD decomposition.)

跳频图案是跳频通信成功的基础，本代码计算了r=15时的m序列优选对，通过找到m序列的特征相位，模2得到了平衡Gold序列(Frequency hopping patterns is fundamental to the success of frequency-hopping communication, the code calculated the r = 15 when m sequence optimization right, by finding the characteristics of m sequence phase, mode 2 has been balanced Gold sequences)

基于RLS及DTW算法的数字语音识别。用RLS算法来消噪从而提高DTW算法的识别率(Based on adaptive sub-band spectral entropy of the robustness of Speech Endpoint Detection)

该程序时用于做图像分割源代码，应用水平集方法的，速度很快的一种方法(The program used to do image segmentation source code, application level set method, a method of fast)

This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.

Filtro FIR de primer orden

该损伤模型通过 商用有限元软件ABAQUS /Explicit 的用户子程序VUMAT 实现，并使用该模型对碳纤维增强环氧树脂 复合材料层合板在横向低速冲击作用下的损伤和变形行为进行预测分析． 数值仿真的结果与试验结 果进行了比较，吻合良好，验证了该模型的有效性．(Through coding user subroutine VUMAT of finite element software ABAQUS /explicit， and applied the model to an example，carbon fiber reinforced epoxy composite laminates under low velocity impact，the prediction for damage and deformation were good agreement with the experimental results．)

PSO-Kapur based Image segmentation