Method1

说明：  matlab图像处理相关命令大全，比较全面，并且有示例，都是一些简单但是很实用的matlab命令(it is good for those who are learning MATLAB )

灰色关联分析法，能客观评价事物，具有更高的客观决策性(Gray relational analysis, to objectively evaluate things, more objective decision-making)

经过测试，发现这个代码结果很好，而且可以 和别的程序结合，恩不错的(tested and found very good results this code, but can and other procedures, TU good)

说明：  地震下结构碰撞问题，结构模态分析与虚拟激励法程序(Seismic structure of the collision problem, structure modal analysis procedure with the virtual excitation method)

准确计算语音信号或者噪声信号的三分之一倍频程。(Accurately calculate the speech signal, or one-third octave noise signal.)

码分多址(CDMA)技术作为第三代移动通信系统的核心技术，具有容量大、抗干扰能力强等优点。然而,传统的CDMA系统属于窄带扩频系统,它的数据速率比较低,不能胜任新一代移动通信系统 （beyond 3G）高速数据通信的需要。而多载波传输技术－正交频分复用（OFDM），作为后三代移动通信的核心技术，则具有高数据速率传输的特点。(Code Division Multiple Access (CDMA) technology as the third generation mobile communication system' s core technology, high capacity, anti-interference ability and so on. However, the traditional narrow-band CDMA system is spread spectrum system, and its relatively low data rate, can not do next-generation mobile communication systems (beyond 3G) high speed data communication needs. The multi-carrier transmission technology- orthogonal frequency division multiplexing (OFDM), after three generations of mobile communications as a core technology, the high data rate transmission characteristics.)

产生一个连续信号，包含低频，中频，高频分量，对其进行采样，进行频谱分析，分别设计三种高通，低通，带通滤波器对信号进行滤波处理，观察滤波后信号的频谱。(generating a continue time singal,which contains low,middle and high frequences,sampling it.analisize its spetrum.Then designing three kind filters are lowpass,highpass,bandpass filters and processing it.Observing its spetrum.)

calcul the 3j matrice for quatic physics

In this paper, a dq model based on transformation theory for five-phase induction machines is presented. A detailed implementation of an indirect-type five-phase field-orientation control including the hysteresis-type pulsewidth modulation (PWM) current regulator is described. A method for continuous and disturbance-free operation of a five-phase field-orientedcontrolled induction motor drive with complete loss of one, two, or even three legs of the inverter or motor phases is described. A complete analysis and computer simulation of this control technique is included.

paper on 802.15.4 simulation