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各种窗函数设计得到的低通滤波器的幅度频率特性(Design a variety of window function in the range of low-pass filter frequency characteristics)

一个功率谱估计的程序，有需要的可以研究一下(A power spectrum estimation program can be studied if necessary.)

OFDM system orthogonality plot or simulation

基于SMI算法的零陷展宽算法，能够有效展宽信号方向图的零陷位置(Based on the SMI algorithm, the zero broadening algorithm can effectively widen the zero position of the signal pattern)

apply different frequency domain filter

一个蚁群算法优化GM模型的程序，相互学习(An ant colony algorithm GM model program, learn from each other)

将波纹钢板桥涵结构简化为单位宽度的固支圆弧梁,同时考虑波纹钢板桥涵结构和土的共同作用,首次建立了该结构的计算模型,推导了该结构位移、应力的解析解.实例计算结果表明:理论计算结果和现场实测结果相当吻合.在此基础上,编制MATLAB程序,进一步分析波纹板厚、波峰高度、波长、结构半径,土体自重、侧压力系数,以及弹性模量对结构位移、应力的影响,为该结构优化设计和施工提供了理论依据.(The simplified structure of corrugated steel culvert unit width clamped circular beam, taking into account the corrugated steel culvert structure and interaction of soil for the first time to establish a computational model of the structure, the structural displacement derived analytical solution of stress. Example calculation the results show that: the theoretical calculations and field measurement results are quite consistent on this basis, the preparation of the MATLAB program, further analysis of corrugated sheet thickness, wave height, wavelength, structure radius, the weight of soil, lateral pressure coefficient, and elastic modulus of the structure. displacement, the impact of stress for the structural optimization design and construction provides a theoretical basis.)

G-Rilling的emd工具箱,很好的完成hht中的黄变换。(G-Rilling s emd toolbox, well done hht of Huang Transform.)

一个用matlab解决微分方程的例子，比较适合初学者(To solve a differential equation using matlab examples, more suitable for beginners)

运用差分方法对全国人口进行预测，预测到2035年，结果是在新的计划生育下进行的(Using differential method to predict the country s population forecast to 2035, the result was carried out under the new family planning)