STM32单片机，采用数字相关法测量两路波的相位差，内含工程，进行了模拟数据测试通过，稍微修改即可使用，并附上了理论文档。-STM32 microcontroller, using digital Correlation Method for Measuring the phase difference between two waves, including engineering, tested by simulated data, you can use slightly modified

NRZ type differential phase modulation signal modeling and simulation analysis, Including the generalized cross-correlation function GCC time delay estimation, By applying the beam forming technology of BE.