spectrogram_example

本程序代码是Matlab程序，主要是扩频系统的，来研究快跳频系统(the systerm of SFH used with Matlab)

Comparable Entity Mining from Comparative Questions

Costas环是用来解调双边带抑制载波信号的,也是二相或四相移相键控信号解调的专用环路(Costas loop for demodulating the double sideband suppressed carrier signal, two-phase or four-phase shift keying signal demodulation dedicated loop)

详细的线性PCA计算过程，详细的线性PCA计算过程(The linear PCA detailed calculation process)

SSwatermarking code for multimedia security to watermark an image with this code.

已调制信号计算其普相关密度，通过虚拟阵元进行DOA估计，是一种双隐层反向传播神经网络。( Modulated signals to calculate its density Pu-related, Conducted through virtual array DOA estimation, Is a two hidden layer back propagation neural network.)

说明：  自适应滤波器解决非平稳的过程，因为实际信号的统计特性可能是非平稳的或者是未知的。(Adaptive filter solves the non-stationary process, because the statistical characteristics of the actual signal may be non-stationary or unknown.)

用窗去除噪声，达到良好的去噪效果.通过不同窗的比较，得到满意的效果。(to discris the noise by a window)

说明：  匈牙利法与最佳匹配分配问题 matlab实现(Hungary and France and to achieve the best matching distribution matlab)

详细的介绍了FDTD进行数学建模分析的相关数学理论知识。(A detailed description of the FDTD related mathematical theory knowledge of mathematical modeling analysis.)