homework2

基于纹理结构的图像检索，matlab实现。(Texture-based image retrieval, matlab achieve.)

1. 基于simulink搭建一个QPSK发送链路，QPSK调制信号经过了瑞利衰落信道，观察信号经过衰落前后的星座图，观察信道特性。仿真参数：信源比特速率为500kbps，多径相对时延为[0 4e-06 8e-06 1.2e-05]秒，相对平均功率为[0 -3 -6 -9]dB，最大多普勒频移为200Hz。(1. Based on simulink structures, QPSK sent a link, the Rayleigh fading channel after the QPSK modulation signal, were observed before and after signal after the decline of constellation diagram, observation channel characteristic. Simulation parameters: the source is 500 KBPS bit rate, relative multipath time delay of [0 8 e 4 e- 06-06 e-05] 1.2 seconds, the relative average power is [0-3-6-9] dB, most of the doppler frequency shift is 200 hz.)

超声换能器线性阵列声强和声压峰值计算案例(calculations of intensities and peak pressure of the linear arrays)

可以描述光子周期晶格的matlab程序源代码(Photonic lattice can describe the cycle of the source code matlab)

matlab - how to draw a map with DEM file on plot :)

采用二进制编码，精度高，解决多目标优化问题。可根据个人需要进行改进。(Nice genetic algorithm procedures)

高斯赛德尔消元法、Heun法等实现线性方程组的求解、另附一份MATLAB之GUI设计基础(High Sisaideer elimination method, Heun method to achieve linear equations, attach a MATLAB GUI design basis)

basic segmentation

说明：  线性代数实验及MATLAB入门,电子工业出版社出版 陈怀琛 龚杰民合著(linear algebra tests and MATLAB entry, the electronics industry publishing house Huai-China co-authored al.)

通过计算一批整数的阶乘来测试电脑的运行速度。(Test running speed of a computer by calculating a power of some int numbers. And the program is writen with QT.)