homework_4

given metodites stoc

Kalman filter examples, kalman_update

关于qpsk调制的代码，详细描述和仿真了qpsk的调制过程和AWGN信道(About qpsk modulation code, a detailed description and simulation of the qpsk modulation process and the AWGN channel)

位置速度到轨道要素的转换，用于航天工程计算(Position, velocity to the orbital elements of the conversion for aerospace engineering calculations)

com Serial based communication serial port

一个非常经典的独立元分析程序包，可以应用在图像处理，故障诊断(a very classic ICA program packet ,which can be used in picture processing and fault diagnosis)

离散多载波传输(DMT)的MATLAB程序及注释，多初学者会有帮助(discrete multicarrier transmission (DMT) and the MATLAB program notes, there will be more help beginners)

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.)

很好的东西，仿真用得上。大家下载试试。。。(Good things, the simulation used)

能量检测,主要是看如果根据虚警概率得到门限，然后进行判决(enengy detection)