PCA_FRS_ORL_V_2.0

K-means algorithm for color images (3-channel). Implemented on MATLAB for segmentation.

This work introduces two variants of unsupervised color segmentation methods. The underlying idea is to segment the input image several times, each time focussing on a different salient part of the image and to subsequently merge all obtained results into one composite segmentation. As a first step salient parts have to be identified in the image, which is done by a simple local color clustering approach.

matlab编写的基-2fft快速付里叶算法程序，输入倒位序，输出自然顺序。(Matlab prepared by the base-2fft fast Fourier algorithm procedures inversion input sequence, Output of natural order.)

时频分析工具包，可用于非平稳信号处理，for matlab(This is the Time-Frequency Toolbox, a collection of about 100 M-files , developed for the analysis of non-stationary signals using time-frequency distributions. It consists in groups of signal generation files, processing files and post-processing files (including visualization tools). The toolbox contains numerous algorithms for time-frequency signal analysis, with special emphasis on quadratic energy distributions within Cohen s class and the affine class, including most recent developments based on reassignment. The Time-Frequency Toolbox has been developed by Francois Auger, Olivier Lemoine, Paulo Gonlv and Patrick Flandrin during the years 1995-1996. Later, modifications for Matlab 5 were made available.)

混沌保密通信的最新进展,混沌保密通信的最新进展(Chaotic secure communication of the latest developments in chaotic secure communication of the latest progress)

最小方差无畸变波束形成，常用的常规波束形成方法(Minimum variance distortionless beam forming, common conventional beamforming method)

某工业系统可等效为二阶环节带延迟...且执行机构具有0.07的死区和0.7的饱和区。采样时间T=0.01；系统的输入r(t)=1.5 要求1）设计一模糊控制器，使系统输出尽快跟随系统输入；2）模糊控制与PID控制的性能进行比较；3）系统有无延迟性能进行比较(An industrial system can be equivalent to second-order part of the implementing agencies with a delay ... and the dead with a .07 and 0.7 saturation. Sampling time T = 0.01 the system input r (t) = 1.5 requirement 1) design a fuzzy controller, the system output as soon as possible to follow the system input 2) fuzzy control and PID control performance comparison 3) whether the delay in the system performance comparison)

ESPRIT是“Estimating signal parameters viarotational invariance techniques”的缩写，含义是“借助旋转不变技术估计信号参数”，它是由Roy[221等人于1986年提出的另一种基于子空间的DOA估计方法。 应用领域 　　侧向定位 信号处理 思想 　　ESPRIT的思想在于，将传感器阵列分解为两个完全相同的子阵列，两个子阵中每两个相对应的阵元具有相同的平移，即要求阵列具有平移不变性，每两个位移相同的阵元匹配成对。所幸的是实际中许多阵列满足这个条件，比如等距直线阵。(ESPRIT is "Estimating signal parameters viarotational invariance techniques" acronym, meaning "With ESPRIT estimation of signal parameters", it is by Roy [221, who in 1986 proposed DOA estimation method based on subspace another. Applications Lateral positioning signal processing Thinking ESPRIT thinking that the sensor array is divided into two identical sub-arrays, each of the two sub-arrays of two corresponding array element has the same translation, which requires an array with translation invariance, the displacement of each of the two identical arrays yuan matching pairs. Fortunately, many of the actual array satisfy this condition, such as equidistant linear array.)

TDOA定位的Chan算法MATLAB源代码，不过是二维的，需要的同志可以下载一下(Chan algorithm MATLAB source code, but is two-dimensional, and we need comrades TDOA location can be downloaded at)

说明：  分别建立pid控制与模糊PID控制的BLDC仿真模型，对比效果良好(BLDC simulation models of PID control and fuzzy PID control are established respectively, and the comparison results are good.)