张永军, 张勇. SPOT 5 HRS立体影像无(稀少)控制绝对定位技术研究[J]. 武汉大学学报 ( 信息科学版), 2006, 31(11): 941-944.
引用本文: 张永军, 张勇. SPOT 5 HRS立体影像无(稀少)控制绝对定位技术研究[J]. 武汉大学学报 ( 信息科学版), 2006, 31(11): 941-944.
ZHANG Yongjun, ZHANG Yong. Direct Georeferencing of SPOT 5 HRS Imagery Without(or with a Few) Ground Control Point[J]. Geomatics and Information Science of Wuhan University, 2006, 31(11): 941-944.
Citation: ZHANG Yongjun, ZHANG Yong. Direct Georeferencing of SPOT 5 HRS Imagery Without(or with a Few) Ground Control Point[J]. Geomatics and Information Science of Wuhan University, 2006, 31(11): 941-944.

SPOT 5 HRS立体影像无(稀少)控制绝对定位技术研究

Direct Georeferencing of SPOT 5 HRS Imagery Without(or with a Few) Ground Control Point

  • 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。

     

    Abstract: 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.

     

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