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Ground target geo-location using imaging aerial camera with large inclined angles
Qiao, C.; Y.-L. Ding; Y.-S. Xu; J.-H. Xiu and Y.-L. Du
2017
发表期刊Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号25期号:7
摘要Aiming at problems that operating range of laser ranging finder limits shooting distance of aerial camera with large inclined angles, a directly target geo-location algorithm independent of ranging equipment was proposed. Based on aircraft positions and attitude information measured by airborne Position and Orientation System (POS), as well as outer and inner gimbal angles from the encoder in the aerial camera, target to sensor vector in Earth-Centered Earth-Fixed (ECEF) coordinate was solved by homogeneous coordinate transformation. Then according to ellipsoidal earth model and global Digital Elevation Model(DEM), the longitude and latitude of the target were determined. The Monte Carlo method was employed for simulated analysis on influences of measurement errors of aircraft position and altitude as well as encoder on pointing accuracy of Line of Sight (LOS). Compared with the geo-location algorithm which only based on ellipsoidal earth model, the algorithm effectively reduced the influence of uneven terrain on target location. When the standard deviation of uneven terrain in the target area is over 10 m, the positioning accuracy of the wide-angle inclined imaging is improved significantly. The flight test proves the feasibility of the target geo-location algorithm, in which the Circular Error Probability(CEP) of the target geo-location is smaller than 70 m when the flight height is 18 000 m and the roll angle of the photography inclination angle is less than 63. Consequently the proposed algorithm can meet actual demands of the project. 2017, Science Press. All right reserved.
收录类别ei
语种中文
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/59158
专题中科院长春光机所知识产出
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GB/T 7714
Qiao, C.,Y.-L. Ding,Y.-S. Xu,et al. Ground target geo-location using imaging aerial camera with large inclined angles[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2017,25(7).
APA Qiao, C.,Y.-L. Ding,Y.-S. Xu,&J.-H. Xiu and Y.-L. Du.(2017).Ground target geo-location using imaging aerial camera with large inclined angles.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,25(7).
MLA Qiao, C.,et al."Ground target geo-location using imaging aerial camera with large inclined angles".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 25.7(2017).
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