hangmingma

yufengax-----基带 yufengbx-----PSK yufengcx-----QPSK yufengdx-----FSK yufengex-----16QAM yufengx-----误码率曲线 1----误码率曲线图(yufengax- baseband yufengbx-PSKyufengcx-QPSKyufengdx-FSKyufengex-16QAMyufengx- bit error rate BER curves 1 curve)

Pressure vessel design implementation . .

MATLAB实现的基于软开关技术的pwm电路。(MATLAB based on soft switching technology of the PWM circuit.)

由于卫星与用户接收机二者的连线方向上存在相对运动，因此引起了载波和伪码的多普勒效应，再加上接收机晶体震荡频率漂移和卫星时钟频漂等原因。接收机实际接收到的卫星载波中心频率一般不再等于信号被发射时的标称频率，这就需要接收机在载波频率一维对信号进行搜索。同时，由于卫星到接收机的距离时刻变化，加上接收机始终相对于GPS时间的偏差又并不固定，因而接收信号的伪码相位值也在改变，所以接收机也要在码相位一维对信号进行搜索。扩频信号的捕获是一个对目标信号频率域和相位域进行的二维搜索过程。(Because of the relative motion between the two of the satellite and the user receiver, the Doppler effect of the carrier and pseudo-code is caused, and the frequency drift of the oscillation of the receiver crystal and the frequency drift of the satellite clock are added. The frequency of the satellite carrier center that the receiver actually receives is generally no longer equal to the nominal frequency of the signal being transmitted, which requires the receiver to search the signal in one dimension of the carrier frequency. At the same time, because the distance between the satellite to the receiver is changed, the deviation of the receiver always relative to the GPS time is not fixed, so the pseudo code phase value of the received signal is also changing, so the receiver also searches for the signal in the code phase. The acquisition of spread spectrum signal is a two-dimensional search process for the frequency domain and phase domain of the target signal)

国外的潮流计算程序 MATLAB矩阵思想很重要 我有些糊涂 希望大家共同讨论(Program abroad, the trend of thought is very important MATLAB matrix confused me some hope that we discuss)

Standard dispersion for fiber opticsvformula from Corning

直流电动机控制的matlab实现，有完整的simulink图(DC motor control matlab achieved complete simulink map)

Matlab code for image compression.

基于MATLAB的语音信号分析与处理，包括检查滤波及GUI的设计。(digital signal processing based on matlab)

基于耦合模理论给出了光纤光栅中的双模耦合方程，采用传输矩阵法数值模拟了均匀光纤光栅和啁啾光纤光栅的反射谱(fiber grating coupled mode theory transfer matrix method optical properties )