state-estimation-using-PSO

this paper is about the image watermarking using DWT+DCT+CDMA. it provides a good PSNR value then each technique seprately

说明：  结构振动反应。在强烈地震波德作用下，2个自由度相对位移和绝对加速度的反应，考虑了阻尼的影响。(struture response due to ground motion.during a big ground motion,one 2 degree of freedom-structure s relative displacement and absolute acceleration response.consider damping raion.)

％ This program calculates radar ranges in a jamming environment. It works ％ with both Stand-off jamming and self-screening jamming for steady and Swerling type ％ targets with frequency agility, coherent integration and standard atmosphere/rain ％ attenuation( This program calculates radar ranges in a jamming environment. It works with both Stand-off jamming and self-screening jamming for steady and Swerling type targets with frequency agility, coherent integration and standard atmosphere/rain attenuation)

space vector modulation for three phase two level inverter

说明：  (1) 打开一个bmp文件 (2) 将其局部区域的灰度值进行改变 (3) 另存为一个新的bmp文件 ((1) open a bmp file (2) the gray value of its local area to change (3) Save as a new bmp file)

LDPC码在AWGN信道下的译码程序（c语言）(LDPC code in AWGN channel decoding procedures under (c language))

这个程序是MATLAB里面完成了计算节点导纳矩阵的功能，对初学者很有用。(This procedure is done inside MATLAB function calculates the node admittance matrix, useful for beginners.)

混沌优化，用于求解非凸优化，算法运算速度快(Chaos optimization, for solving non-convex optimization, fast algorithm)

训练集/测试集产生 load spectra_data.mat 随机产生训练集和测试集 temp = randperm(size(NIR,1)) 训练集——50个样本 P_train = NIR(temp(1:50),:) T_train = octane(temp(1:50),:) 测试集——10个样本 P_test = NIR(temp(51:end),:) T_test = octane(temp(51:end),:) N = size(P_test,2) 数据归一化 ( Training set/test set generation load spectra_data.mat randomly generated training set and test set temp = randperm (size (NIR, 1)) training set- 50 samples P_train = NIR (temp (1:50) ,:)' T_train = octane (temp (1:50 ),:)' test set- 10 samples P_test = NIR (temp (51: end ),:)' T_test = octane (temp (51 : end ),:)' N = size (P_test, 2) Data Normalization)

spread spectrum and despread