FFT

计算低速气动力的涡格法程序，来自NASA，可信度高(This is a vortex lattice aerodynamic program from the low speed aerodynamics group at NASA Langley)

matlab转子有限元碰摩计算，建模简单，自动判断碰摩与否(Maatlab finite element calculation of rotor rub-impact, modeling simple, automatic judgment rubbing or not)

说明：  用混合同余法生成两组伪随机数，利用投针试验求圆周率。软件：matlab。(Two groups of pseudo-random numbers are generated by the method of mixed congruence, and the circularity is calculated by the test of inserting needle. Software: MATLAB.)

计算多材料单元平均应力应变,用于提取计算等效弹性模量 泊松系数(Calculate the average stress-strain of multi-material elements)

重力异常正演代码，请好好使用它。帮助学习。。。。(Gravity anomaly forward code, please use it well. Help learn)

说明：  对音频信号进行处理。实现变速不变调。变调不变速。男声变女声。内有实例音频文件(The audio signal processing. Adjusted to achieve the same speed. Tone does not shift. Male Female change. There are instances of audio files)

交互多模滤波器 利用马尔科夫链对多种测量模型分别进行卡尔曼滤波 并利用转移概率对滤波结果进行加权 适用于机动目标跟踪和低空多径噪声下的高度测量(IMM filter Markov chain model for a variety of measurements were Kalman filter and using the filtered result of the transition probability weighting applicable at low altitude maneuver target tracking and multipath noise height measurements)

windows计时器工具，能够精确到毫(0.001)，说明文档请用office2010打开。(windows timer tools, technology is accurate to the mm (0.001), documentation office2010 open.)

说明：  matlab的时频分析工具箱，含全部工具箱程序(Matlab time-frequency analysis toolbox, including all toolbox programs)

基于K均值的PSO聚类算法,matlab小波分析程序，小波包分析提取振动信号中的特征频率。( K-means clustering algorithm based on the PSO, matlab wavelet analysis program, Wavelet packet analysis to extract vibration signal characteristic frequency.)