texture

dpsk信号的调制解调matlab代码实现的一个例子，采用正交调制解调。(DPSK signal modulation and demodulation matlab code an example of the use of orthogonal modulation and demodulation.)

This matlab program simulates a fuzzy control system for a tanker ship.

利用维格纳方法实现对数字信号进行时频分析处理的功能(Wigner method implementation using digital signal processing functions time-frequency analysis)

岩石物理模型，Hashtrickman 上界与下界，可以求得不同组成物质的弹性模量的上下界。(rock physics model, using the Hashin-Shtrickman model which can calculate the upper and lower elastic preperties for a rock .)

求传函的能控能观阵，以及初值的计算。程序简单易懂，旁边附有说明(Transfer function of the energy demand can watch the control and calculation of initial value)

he fi eld of plasmonics has grown dramatically over the past decade, and still continues growing towards new directions enabling new fundamental science and device tech-nologies. Research in this area explores how electromagnetic fi elds can be confi ned over dimensions smaller than the wavelength. It is based on interaction processes between elec-tromagnetic radiation and conduction electrons at metallic interfaces or in small metallic nanostructures.(he fi eld of plasmonics has grown dramatically over the past decade, and still continues growing towards new directions enabling new fundamental science and device tech-nologies. Research in this area explores how electromagnetic fi elds can be confi ned over dimensions smaller than the wavelength. It is based on interaction processes between elec-tromagnetic radiation and conduction electrons at metallic interfaces or in small metallic nanostructures.)

implement doa algorithms 1)classical 2)music 3)min-norm 4)mvdr

xwch_test.m是主测试文件；biaoji.mat存放滤波器系数；xiangweicha.m用FFT计算相位差。 仿真框架为： 1.标记信号和双音信号续接作为发送信号； 2.对双音中一个频率分量的相位做偏移，再经过一个低通滤波器（引入线性相位，模拟收发不能同步测量现象）后，作为收到的信号； 3.用一个检测信号对收发信号进行相关运算； 4.画出收发信号以及相关处理后的信号。找出相关信号的那个尖点，从而推算出收发双音信号0相位点； 5. 输入0相位点位置，计算相对相位差。(xwch_test.m is the main test file biaoji.mat store filter coefficients xiangweicha.m calculated using FFT phase difference. Simulation framework: 1. Mark signals and then as a two-tone signal continued to send signals 2. On a two-tone frequency components of the phase shift to do, and then through a low pass filter (the introduction of linear phase, simulation can not simultaneously send and receive measuring the phenomenon), the as received signal 3. using a detection signal of the transceiver signal correlation operation 4. draw send and receive signals and related processed signal. Correlated signal of the cusp, which calculate the two-tone signal transceiver 0 phase point 5. Enter 0 phase point position, calculate the relative phase difference.)

步进电机的MATLAB仿真程序，采用了卡尔曼滤波，对定子电流进行估计，并估算出转子的位置和速度(Continuous time extended Kalman filter simulation for two-phase step motor，Estimate the stator currents, and the rotor position and velocity, on the basis of noisy measurements of the stator currents. )

说明：  DOA估计算法,是一种有效的算法,方便,快捷(DirecTionofArrinal)