A lot of parameters related to the research of the interferometric phase difference are formulated and analyzed in detail . the factors that affect the correlation of insar system are discussed comprehensively . the effects caused by all kinds of decorrelation factors are analyzed 在对干涉相位的研究中，详细推导了条纹波数、临界基线、模糊高度、距离向最大可测坡度、频移、平地相位等参数，并分析了这些参数的物理意义。
