基于第二次土地调查的大区域SPOT5影像工程化处理研究

The Engineering Management Research Based on Large-scale SPOT5 Images in the Second Investigation of Land-use Change

国土资源部即将在全国开展的新一轮土地调查,并建立土地变更调查制度和管理系统。相较于上世纪80年代的第一次土地详查,新一轮土地调查的特点在于技术新、手段齐,查得全、查得清。本文针对第二次土地调查,以工作中普遍采用的大区域多景连片SPOT 5卫星影像为例,讨论了SPOT 5卫星影像的正射纠正方法,详细介绍了影像纠正前根据参考图选点误差、数字高程模型的误差精度和传感器内部结合误差三方面对影像纠正应该达到的精度理论值进行评估,以及纠正后对影像几何精度的精度评定的方法,阐述了SPOT 5卫星影像处理的工程化管理方法。

A new investigation of land use changes will be carried out under the ministry of land and resources which will construct a new system of land investigating methods and managements. The new investigation can obtain comprehensive and wide-ranging results respect to the first land investigation during 1980＇s through making full use of new techniques. This paper discussed the orthorectifying method for SPOTS satellite image practicing in continuous SPOTS images in large scale concerning the second investigation of land use changes. The engineered management of SPOT5 was introduced, and the methods of accuracy evaluation according to the error of the site-selecting, digital elevation model and endogenous factors of the transducer were expatiated.