摘要
研究了SPOT 5卫星HRS立体影像的成像原理,构建了无需地面控制点的直接对地绝对定位模型。实验表明,无控制绝对定位结果存在不同程度的系统误差;利用任意位置的1个地面控制点消除系统误差后即可获得较好的平面和高程定位精度;利用1个地面控制点外推580 km进行绝对定位时,平面定位精度仍优于20 m,高程定位精度约10 m,说明卫星轨道本身具有较好的稳定性,显示了本模型具有良好的应用前景。
The photographic principle of SPOT 5 HRS is discussed in detail. By a series of coordinate system transforming, the rigorous orbit model of direct geo-referencing without ground control point is established. Experimental results of three datasets show that there are systematic errors existed. Once a ground control point is introduced, the result is improved tremendously. Results of 580 km test dataset with one ground control point are still better than 20 m for the planar position and about 10m for the altitude. It shows that the orbit itself is very stable. The HRS imagery has promising potential for various applications.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2006年第11期941-944,共4页
Geomatics and Information Science of Wuhan University
基金
国家973计划资助项目(2006CB701302)
