COS_cic

1.why there is a spike at every peak of current wave form? how to eliminate this? 2.actual current before filtering is around 6 amps peak , but after filtering it is giving 8.5 amps ,even after changing KP,KI values in PI controller reference value is not coming down...

数字信号处理中数字滤波器的设计及对其滤波使用(Digital signal processing in the digital filter design and its use filtering)

东北大学研究生上课时数字图像处理课的课件(Northeastern University graduate class of digital image processing course courseware)

说明：  基于压缩感知思想的图像分块压缩与重构方法 考虑到大多数图像信号信息分布有差异, 编码端, 在对图像分块的基础上, 融合熵估计 和边缘检测方法计算各图像块的信息含量, 再从两个不同的角度进行分类采样: 依据信息量多少将图像块分为平滑、过渡和纹理3 类, 使用不同的采样率采样 依据信息量的分布特征, 采用不同的采样率分配策略进行采样. 在解码端, 根据不同类型的图像块构造不同的线性算子进行重构, 再运用改 进的迭代阈值算法去除块效应和噪声. 实验证明, 算法在提升图像重构质量的同时缩短了重构时间,并且对纹理边缘多的图像的重构效果较其他方法理想.(Considering that most information of the image signal difference distribution, the encoding side, in the right image sub-blocks based on the integration entropy estimation And edge detection method for calculating the information content of each image block, and two different angles classification sampling: The number of image blocks based on the amount of information into a smooth, transition and texture three classes, using different sampling rates based on the amount of information distribution characteristics, using different sampling sampling rate allocation strategy. in the decoding side, depending on the type of image blocks to construct different linear operator reconstructed, re-use change Iterative thresholding algorithm into blockiness and noise removal experiments show image reconstruction algorithm to enhance the quality while reducing reconfiguration time, and much of the texture edge image reconstruction results are satisfactory compared to other methods.)

压缩感知重构算法中的稀疏度自适应压缩采样算法代码(Compressed sensing reconstruction algorithm sparsity adaptive compression algorithm code samples)

说明：  里面包含详细的CFAR公式推导及原理，里面的公式可以对照雷达信号处理基础一书中的第七章部分(It contains detailed derivation and principle of CFAR formula.)

Fourier for mathlab with image processing

this program creates file list of a directory

用线形天线阵（ULA）进行波达方向估计，代码、注释与说明(Estimate the direction of arrival (DOA) by MUSIC/ESPRIT methods using ULA. Matlab codes and documents included.)

说明：  sw差分格式求解一维黎曼问题，深入理解黎曼问题，学习计算流体力学(Sw difference scheme to solve one-dimensional Riemann problem, in-depth understanding of Riemann problem, learning computational fluid dynamics)