LJD

IEEE 802.15.3a UWB信道模型仿真，(IEEE 802.15.3a UWB channel model simulation,)

微卫星SSR基本数据分析常用软件，功能比较强大，具有通用性(Microsatellite SSR commonly used basic data analysis software, the function is stronger, is versatile )

codes for matlab software

SIFT双向匹配代码，基于matlab版本的代码(dual-matching of SIFT)

剑桥大学David J.C. MacKay 个人网站公布的2006年的代码(David JC MacKay Cambridge University personal website published the code in 2006)

Ica的matlab算法，经过实验验证了，希望对大家有用(Ica the Matlab algorithms, after experimental verification in the hope that it may be useful to)

shielding effectiveness of the materials

说明：  Matlab环境下，实现用PCA方法提取EigenFace,之后通过SVM方法对人脸图像进行分类识别。(Face recognition via PCA and SVM method)

DFT进行频谱分析时的三种现象 1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。 采样前加低通滤波器防混叠 2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。 改用其他窗函数（非矩形）改善泄漏。 3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)

Matlab图形图像处理函数。全部的Matlab图形图像处理函数集合(Matlab graphics image processing function. All of the Matlab graphics image processing function set)