node-admittance-matrix

二维主成分分析方法在人脸识别中的研究，MATLAB开发环境开发(Two-dimensional PCA methods for face recognition research, MATLAB development environment, development)

用于图像的主成分变换，完成数据压缩的目的和数据信息的提取(transformation of features)

改程序是经典的模态识别程序，基本包括了所有的模态识别方法，包括prony法、era发、频域分析法，还具有有限元分析等功能，对模态分析特别有帮助。(Reform program is the classic modal identification procedures, including all of the basic modal identification methods, including prony law, era hair, frequency domain analysis, also has features such as finite element analysis, modal analysis of particularly helpful.)

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

DS-CDMA仿真-matlab代码，及其代码详细说明(DS-CDMA simulation-matlab code, and code details)

北航实习相关实验。 实验一：陀螺仪关键参数测试与分析实验、加速度计关键参数测试与分析实验 实验二：惯性测量单元安装误差系数标定实验 实验三：惯性导航综合实验 实验四：基于运动规划的惯性导航系统动态实验 实验五：惯性基组合导航及应用技术实验 惯性技术习题答案1-5 内含相应程序(BUAA practice related experiments, Containing the corresponding procedures)

自适应滤波技术中的LMS自适应滤波器程序(Adaptive filtering technology LMS adaptive filter procedures)

自编的增加维数精细积分求解非线性动力学方程的程序(pim method)

模拟拓展卡尔曼滤波的计算，雅各比矩阵的运算(Extended Kalman Filter)

Reading a PGM image file