serialtool

Locally-Linear Embedding (LLE)[9] was presented at approximately the same time as Isomap. It has several advantages over Isomap, including faster optimization when implemented to take advantage of sparse matrix algorithms, and better results with many problems. LLE also begins by finding a set of the nearest neighbors of each point. It then computes a set of weights for each point that best describe the point as a linear combination of its neighbors. Finally, it uses an eigenvector-based optimization technique to find the low-dimensional embedding of points, such that each point is still described with the same linear combination of its neighbors. LLE tends to handle non-uniform sample densities poorly because there is no fixed unit to prevent the weights from drifting as various regions differ in sample densities. LLE has no internal model.

几何活动轮廓模型（snake模型）中level-set算法的matlab源码(Geometric active contour model (snake model) in the level-set algorithm matlab source)

file contain for matlab code for radio communication.

matlab代数方程求解 微分方程 绘图 重庆大学数模培训材料(matlab algebraic equations the number of model training materials, Chongqing University)

CCD暗电流分析程序，可应用到各种领域CCD暗电流的测量，同时，包含origin图形分析软件(CCD dark current)

产生一个典型的LFM波形，包括包括其时域波形（实部、虚部）和频谱。(Produces a typical LFM waveform, including including the (real part, imaginary part) and a spectrum of the time domain waveform.)

通过MATLAB对一幅多个人物的图像进行，人脸轮廓的提取，识别。效果不错，譬如毕业照这样的照片能有很好的结果。(By MATLAB to more than one person in the image , extract facial contour recognition . Good results, such as this photo graduation photo can have a good result .)

对人行走时的微动特性进行了分析，采用时频分析技术展示了人行走的微多普勒效应，与国外相应分析文章结论一致。(Fretting characteristics of people walking were analyzed, using frequency analysis when the micro-Doppler effect shows people walking, consistent with the analysis of the article corresponding foreign conclusions)

说明：  1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图 2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选 3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图 (1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their respective time-domain waveform of Figure 2. FFT to transform, showing their frequency spectrum, including sampling rate, frequency, data length of 3-on-demand. Made of the three signals in root-mean-square maps, power maps, as well as the number of root-mean-square map 4. Fourier Transform IFFT with the restoration of signals, and displays the sinusoidal signal the resumption of time-domain waveform)

计算天线阵列远场方向图，支持各种幅度加权，相位加权，可自行指定阵元方向图(calculate the farfield of an antenna array with various degrees of freedom)