qaosang

说明：  利用MATLAB实现激光谐振腔的设计，成功实现多种腔形的设计与仿真(simulate the laser resonator)

基于YCgcr肤色空间的自适应阈值分割的算法，本人根据论文《YCgCr颜色空间的肤色聚类人脸检测法》原创(YCgcr color space based adaptive thresholding algorithm, I am under the thesis " YCgCr color clustering color space face detection method" original)

％％目标在监控区内运动轨迹为浆型曲线时的定位( Target in the surveillance zone trajectory curve for the slurry when the positioning)

移动最小二乘法构造的形函数及形函数偏导图形(moving least square)

多径误差包络的仿真，能够清晰的看出。希望对大家有所帮助。(Multipath error envelope simulation, can be clearly seen. We want to help.)

this is matlab code for pprobality theory which is implemetatde in matab 7,6

Transmission matrix code

无刷直流电机模型及双闭环控制，很实用，效果良好(Brushless DC motor model and double-loop control, it is practical to good effect)

预备实验 Matlab软件环境的熟悉，里面一些最简单的只是知识，可以帮助刚入门的学习(Prepared to experiment with Matlab software environment, which is just some of the most simple knowledge that can help just getting started learning)

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.)