基于卫星编队InSAR系统误差源分析

误差源分析是一个系统产品精度保障的前提条件。介绍了InSAR高程测量的基本原理;根据基本原理,从影响高程测量精度的基线长度、基线倾角、相位差、雷达天线到地面目标点的距离以及雷达天线高度等5个要素着手;依据这5个要素的产生过程,结合基于编队卫星InSAR系统的特点对系统的误差源进行了研究;最后较系统地分析出了影响编队卫星InSAR系统的误差源。

Error Source Analysis of InSAR System Based on Formation-Flying Satellites

Error source analysis is a precondition of precision guarantee of systematic production.In this paper,the basic principle of InSAR height measure is discussed firstly,then on the foundation of the basic principle,starting with the five elements of influence on height measure precision such as baseline length,baseline inclination,phase difference,the distance from radar antenna to ground objective and the height of radar antenna,according as the process of bringing into existence of the five elements,combining the characters of InSAR system based on formation-flying satellites,systematic error sources are researched,at last error sources of influence on InSAR system based on formation-flying satellites are more systematically analyzed.