【摘要】 针对星载干涉合成孔径雷达(interferometric synthetic aperture radar,InSAR)定位过程中的问题,分析了星载InSAR阴影区域干涉相位图的相位特点,结论为在距离向上阴影区域两个临界端点处的相位差很小。在该结论的基础上给出了阴影区域的相位重构方法,该方法有效解决了阴影区域相位在解缠时不能传递正确的缠绕周期。建立了InSAR叠掩区域相位模型,推导了叠掩区域的相位特性,并针对该特性给出了叠掩区域的相位重构方法。仿真结果表明了阴影和叠掩区域相位重构方法的有效性和实用性。更多还原

【Abstract】 To settle the difficulty of geolocation in the interferometric synthetic aperture radar(InSAR),the phase characteristic of the spaceborne InSAR shadow region is analyzed,and the conclusion is that phase difference between the extremities of the shadow region in range is small.With the result,a solution of phase reconstruction in the shadow region is developed.A phase model of layover is established,and the phase character is analyzed.A method of phase reconstruction in the layover region is presented based on the phase character.Simulation result indicates the validity and practicability of the proposed method.更多还原