中文摘要：

根据卫星重复观测特性提出区域级空三定位网的概念,存储该地区空三成果。新获取影像与空三定位网进行联合区域网平差,实现无（稀少）控制下影像高精度几何定位。与常规区域网平差方法相比,利用空三定位网进行无控制点影像定位精度有所提高;若与常规平差方法达到相同精度,利用空三定位网需要较少控制点。定位网中影像数量、分辨率高于新获取影像,或与新影像有较高重叠度情况下定位结果较高。实际应用中,将某一区域高分影像空三成果存储构成空三定位网,对新影像进行无控（稀少控制）定位,将会提高影像实时化几何处理效率与影像利用率,为影像几何定位提供了另一有效途径。

英文摘要：

Regional spatial triangulated network managing the outcome of spatial triangulation is raised in this paper on the basis of repeated observation of satellites.Combined block adjustment with non-oriented new images and spatial triangulated network is executed for positioning with sparse（no）ground control points（GCPs）.Test results show that spatial triangulated network can achieve higher accuracy without GCPs and needs fewer GCPs to get the same accuracy than the conventional method.The higher accuracy can be achieved when the number of images in the network is more and resolution higher than the new images and also they have higher overlaps,In application,using spatial triangulated network will improve the timely efficiency of geometry processing of satellite images and images utilization,which provides another effective way to image geometric positioning.