qpso_featsel2

this matlab source code is basic

解决布拉格光纤光栅波长解调问题的粒子群算法，matlab实现(Particle swarm algorithm to solve the problem of fiber Bragg grating wavelength demodulation, matlab achieve)

Matlab经典教程-从入门到精通，帮助大家快速学习并掌握matlab，成为高手。(Classic Matlab tutorial- from entry to the master, to help you quickly learn matlab, become the master.To be professional man !)

when SNR is high , 1st sample estimator provides good estimate of A. it has no noise effect . so we don’t need averaging effect to reduce noise when SNR is high. However variance is still low in sample mean estimator which shows that in reality ,sample mean is good estimator than 1st sample estimator. So, for high SNR, we do not need to reduce the effect of noise by averaging. or we can say that for high SNR let say >1000 , 1st sample estimator got reduced noise. But as for as variance is concerned , the sample mean has low variance for high SNR as well.

风力发电机的启动模型，主要是发电机的启动原理。(Start models of wind turbines, the main principle is to start the generator.)

此函数实现含噪语音的信噪比的计算，以最小帧算法为基础。(Implementation of this function of the signal to noise ratio of noisy speech has calculated that, with the smallest frame-based algorithm.)

提出了一种鲁棒的多水印嵌入与检测算法,该算法基于小波域,且提取水印时不需要原始图像,保护了原始图像的安 全。在该多水印算法中,提出并使用了一种将密码学和常规的数字水印制作方法- - - 叠加法和量化调制法,有机结合起 来的新的方法,在水印嵌入时,不同的水印,生成与该水印相关的不同的密钥,在进行水印的提取时,用不同的密钥和待测的 图像提取出相应的水印。通过将密钥向第三方注册,可以获得对原始图像的所有权。(A robust multi-watermark embedding and detection algorithm, the algorithm based on wavelet domain, and extract the watermark without the original image, protect the safety of the original image. In the multi-watermarking algorithm, will be presented and used a conventional cryptography and digital watermarking production method--- superposition method and quantify the modulation method, combine the new method, the watermark embedding different watermark, associated with the watermark generating different keys, making extraction of the watermark when tested with a different image key and the corresponding extracted watermark. By the key to a third party registration, can be obtained ownership of the original image.)

this is one of the best satelite code in the world to find the parameters of the satelite

matlab based on power electronics and development hj

在matlab下的，牛顿拉夫逊法潮流算法的程序(In matlab, the Newton Raphson power flow algorithm program)