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关于认知无线电频谱感知的能量检测程序。希望大家互相交流！(On the energy spectrum sensing cognitive radio test procedures. Hope we can exchange ideas!)

说明：  数字下变频的matlab程序，在matlab中可运行(a progrme about ddc)

介绍FDTD原理，语言编程的要点，适合于研究电磁波散射与传播的问题，对掌握FDTD来说，很值得参考。(Application expert at Ph.D. in “Time-Domain Methods for the Maxwell Equations”)

Evaluation of immaging array in 2 dimensional...

Eigenvalue calculation of a general matrix

说明：  能够用来求解部分关利用遗传算法的优化模型。。(Relations can be used to solve some of the optimization model using genetic algorithms. .)

用m序列过低通滤波器模拟产生带限高斯白噪声，m序列的长度足够长时功率谱特性接近高斯白噪声的特性。(M-sequence low-pass filter with analog band-limited white Gaussian noise generated, m length of the sequence is long enough the power spectral characteristics close to Gaussian white noise characteristics.)

This program is about simplex2f!

用于本科大四毕业风力机气动设计工作，采用改进的Wilson设计方法(Used for pneumatic design of graduated wind turbine)

处理信号的时频分析，可以得到很精确的幅值、频率、相位估计，可实现对二维数据的聚类，结合PCA的尺度不变特征变换(SIFT)算法，计算多重分形非趋势波动分析，用于建立主成分分析模型。( When processing a signal frequency analysis, You can get a very accurate amplitude, frequency, phase estimation, Can realize the two-dimensional data clustering, Combined with PCA scale invariant feature transform (SIFT) algorithm, Calculate the multifractal trend fluctuation analysis, Principal component analysis model for establishing.)