DeD

由离散数据点进行曲面拟合，得到曲面方程，通过光路追迹计算波像差(Discrete data points from the surface fitting, curve equation obtained by tracing calculation of optical aberration)

四元数matlab代码中的球根运算，可以直接用的(Quaternion operations matlab code bulbs, can be directly used)

小波包分析提取振动信号中的特征频率，是小学期课程设计的题目，采用的是通用的平面波展开法。( Wavelet packet analysis to extract vibration signal characteristic frequency, Is the topic of the elementary school stage curriculum design, Using common plane wave expansion method.)

说明：  详细说明了pi/4 DQPSK 调制、解调，RRC 匹配滤波器设计， BER 蒙特卡洛仿真，rayleigh衰落下的系统仿真。 文档中附有各个模块的Matlab code。(Detailed description of pi/4 DQPSK modulation, demodulation, RRC matched filter design, BER Monte Carlo simulation, rayleigh fading of system simulation. Document attached to each module of the Matlab code.)

Here the code which is help you to find the minutiae in fingerprint

基于MATLAB的系统分析与设计：信号处理 楼顺天 等编(System analysis and design based on MATLAB: signal processing Lou Shuntian edited)

本文首先研究了ISAR成像的基本原理，在理想转台模型的基础上对距离-多普勒(R-D)成像算法做了分析，对目前常用的运动补偿技术进行了对比和研究，并将这些技术用于雅克-42飞机的实测数据中。然后，论文系统地论述了压缩感知主体理论，重点对信号重构中的基追踪(BP)算法和正交匹配追踪(OMP)算法进行了深入的研究和讨论，并通过正弦信号的仿真结果验证了两种方法的有效性。(Firstly, the basic principle of ISAR imaging study, based on an ideal model for distance turntable- Doppler (RD) imaging algorithm to do the analysis of the motion compensation techniques currently used are compared and studied, and the use of these technologies in the measured data in the Yak-42 aircraft. Then, the paper systematically discusses the theory of compressed sensing body, focusing on the signal reconstruction of the base track (BP) algorithm and orthogonal matching pursuit (OMP) algorithm is conducted in-depth studies and discussions, and the simulation results verify the sinusoidal signal the effectiveness of the two methods.)

永磁同步电动机反推速度控制，很不错，控制效果很好(Backstepping speed permanent magnet synchronous motor control, very good)

模糊变换与模糊综合评价中，需要进行归一化处理，即各项之和除以每一项。以下为算子的matlab函数(Fuzzy transform and fuzzy comprehensive evaluation, the need for the normalization process, and that all of dividing the sum of each item. The following is the operator matlab function)

how implement a codec using matlab Simulation