exposure-fusion

bp网络训练后的测试，读取已经训练好的bp网络，进行实际应用(bp network training after the test, reading the training has been good bp network for practical application)

CCNA Practice Questions (Exam 640-802).This book is to provide you with practice questions complete with answers and explanations that will help you learn, drill, and review for the 640-802, 640-822,and 640-816 certification exams. The book offers a large number of questions to practice each exam objective and will help you assess your knowledge before you write the real exam.

单级倒立摆LQR控制，通过LQR控制，为了使系统具有快速的响应，对Q矩阵中的参数Q11和Q33进行调整。(Linear Quadratic Regulator——LQR，adjust the parameter of the Q，fasting the response rate)

功率谱估计 信号为两个正弦信号加高斯白噪声，各正弦信号的信噪比均为10dB，长度为N，信号频率分别为 和 ，初始相位 ，取 ， 取不同数值：0.3，0.25。 为采样频率。分别用Levinson递推法和Burg法进行功率谱估计，并分析改变数据长度、模型阶数对谱估计结果的影响。(Power spectrum estimation signal into two sinusoidal signals applied Gaussian white noise, the SNR of each sinusoidal signal are 10dB, a length of N, respectively, and the signal frequency, initial phase, take, take different values: 0.3,0.25. Is the sampling frequency. Levinson recursive method were used and Burg method for power spectrum estimation, and change the length of the data analysis, the impact on the estimation model order spectrum.)

说明：  假如数据中有N 个变量，而我们想抽取的样本的数量是M,那么在对数据进行抽样的时候，这种方法首先会把N个变量的设计空间均匀的划分开为M份，然后在每个划分好的区域中随机的抽取一点，最后，从这M个变量里，随机挑选之前选好的点，构成我们的样本(If there are n variables in the data, and the number of samples we want to extract is m, then when sampling the data, this method will first divide the design space of n variables into M parts evenly, and then randomly extract a point in each divided area. Finally, from the m variables, randomly select the previously selected points to form our sample)

基于MATLAB语言，对于图像的八个位面图的编码，更加理解图像的主分量，以及高频噪声(Based on the MATLAB language, for the 8-bit plane map image coding, better understand the main components of the image, as well as high-frequency noise)

这是matlab的时间预测的代码，非常实用，大家共享啊(This is the time predicted matlab code, very useful, share ah)

理解信噪比、比特能量与噪声能量比的计算方法、及相互关系(Understanding and Relating Eb/No, SNR, and other Power Efficiency Metrics)

关于OFDM系统中PAPR降低技术的综述，以及验证PTS的降低特性(overview of the deduction on PAPR, a simple procedure to test the performance of PTS)

使用matlab实现遗传算法，内容正确，方法简单(Genetic algorithm matlab code)