there exists adjustable flexibility on amplitude and phase of state variables owing to the special parameters, i. e. constant term and coefficient of ccscle.
this article defines the sensitivity of dispersed variable. and we can use it to analyze the order of a infinite and judge the convergence of a constant term series.
给出离散变量的灵敏度之定义,且通过变量的灵敏度分析无穷大量的阶,从而判断常数项级数的敛散性。
an adaptive phase shifting interferometry, insensitive to the disturbance of constant term of phase perturbations induced by environmental vibration and air turbulence is discussed.