Qt写的解Van der Pol方程的ODE45小程序，与matlab程序类似，自动记录计算耗时。-Qt to write small programs ODE45 Solutions Van der Pol equation, similar matlab program automatically records time-consuming calculation.

用全极化的相干矩阵和协方差矩阵，模拟简缩极化的协方差矩阵和Stokes参数-By coherent matrix and covariance matrix fully polarized, polarized analog abbreviated covariance matrix and the Stokes parameters