map-world-china-america

中山大学sicily题库的一道题，解题思路明了，非常简单！(Sun Yat-sen University sicily exam a question, problem-solving Si Luming, very simple!)

对实验数据的FFT分析，可以显示时域和频域的结果(FFT analysis of the experimental data, can display the results of the time domain and frequency domain)

改进平方根法求解对称正定线性方程组，用matlab编写，可以在一定程度上提高求解效率。其中MRoot_squaring.m为原做法，sparse_cmp.m为二维等带宽存储，Moot_zonal.m为二维等带宽存储的平方根法求解(To improve the square root method to solve symmetric positive definite system of linear equations using matlab to prepare, to a certain extent improve the efficiency of solving. MRoot_squaring.m which the original approach, sparse_cmp.m for the two-dimensional, such as memory bandwidth, Moot_zonal.m for the two-dimensional, such as the square root of bandwidth storage method)

Matlab implementation of the ES (extensive search algorithm ) used in motion estimation of macro blocks.

说明：  三相逆变器simulink 仿真，很好用的 大家可以参考一下 ，希望有帮助(Three-phase inverter simulink simulation, we can use a good reference, want to help)

FSK的similink仿真，希望对大家有帮助(similink simulation of FSK)

sector normalization for matlab

这是pi_4_DQPSK的MATLAB仿真源程序，很好的仿真了这种数字调制和解调(This is pi_4_DQPSK the MATLAB simulation of source, a good simulation of this kind of digital modulation and demodulation)

遗传算法去辨识一个系统：蒸汽锅炉汽包的水位函数，辨识阶数是2阶，而且最后有误差曲线分析(Genetic algorithm for the identification of a boiler steam water level transfer function. Based on the existing data, the transfer function is identified as order 2. And finally the error curve analysis)

HHT源代码 做时频分析的同志们可以看一下 相当经典的例子(HHT time-frequency analysis of the source code to do the comrades can look very classic example of)