xwch_test.m是主测试文件；biaoji.mat存放滤波器系数；xiangweicha.m用FFT计算相位差。 仿真框架为： 1.标记信号和双音信号续接作为发送信号； 2.对双音中一个频率分量的相位做偏移，再经过一个低通滤波器（引入线性相位，模拟收发不能同步测量现象）后，作为收到的信号； 3.用一个检测信号对收发信号进行相关运算； 4.画出收发信号以及相关处理后的信号。找出相关信号的那个尖点，从而推算出收发双音信号0相位点； 5. 输入0相位点位置，计算

应用串口通信而编写的三相有功无功功率计算的一款上位机软件，该软件用串口通信实时的采集三相电能表数据，之后进行相关运算。该范例可作为串口通信及应用的极好实例！推荐正在学习的看一下其应用思路！-Written to the serial communication three-phase active and reactive power calculation of a PC software, the software' s real-time acquisition phase ener

Noisy pulse correlation detection signal, Minimum mean square error (MMSE) algorithm, You can get a very accurate amplitude, frequency, phase estimation.

matlab implements five gray correlation degree computing model, Including single sideband, double sideband, suppressed carrier and quadruple, You can get a very accurate amplitude, frequency, phase estimation.