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航天工程大学,北京 101416
[ "薛 武(1988-),男,山东宁阳人,博士,助理研究员,分别于2011年、2014年、2017年获得信息工程大学学士、硕士和博士学位,现为航天工程大学助理研究员,主要从事光学遥感信息处理方面的研究。E-mail: xuewu_81@126.com" ]
[ "王 鹏(1978-),男,山西长治人,博士,副研究员,硕士生导师,1999年于解放军测绘学院获得学士学位,2002年于解放军信息工程大学获得硕士学位,2006年于解放军信息工程大学获得博士学位,主要从事态势感知与信息处理方面的研究。Email: zbxysimon@163.com" ]
收稿日期:2021-05-07,
修回日期:2021-07-15,
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薛武,王鹏,钟灵毓.线阵垂轨环扫式光学遥感卫星影像几何纠正[J].光学精密工程,
XUE Wu,WANG Peng,ZHONG Ling-yu.Geometric correction of optical remote sensing satellite images captured by linear array sensors circular scanning perpendicular to the orbit[J].Optics and Precision Engineering,
薛武,王鹏,钟灵毓.线阵垂轨环扫式光学遥感卫星影像几何纠正[J].光学精密工程, DOI:10.37188/OPE.XXXXXXXX.0001
XUE Wu,WANG Peng,ZHONG Ling-yu.Geometric correction of optical remote sensing satellite images captured by linear array sensors circular scanning perpendicular to the orbit[J].Optics and Precision Engineering, DOI:10.37188/OPE.XXXXXXXX.0001
新型线阵环扫式光学遥感卫星通过垂轨环扫、沿轨拼接的成像方式实现了超大幅宽与高分辨率的兼顾,但其特殊的成像方式也导致影像的几何畸变十分严重,必须对其进行几何纠正。提出了一种适用于线阵环扫式光学遥感卫星的影像几何纠正方法,该方法首先在科学分析卫星成像特点的基础上构建线阵环扫影像的严格成像模型,然后利用影像轨道、姿态参数和开源DEM对影像进行粗纠正,最后利用参考正射影像匹配得到大量同名点作为控制点,通过样条函数拟合进行影像精纠正。为验证提出方法的有效性,利用模拟影像开展了试验,结果表明该方法几何精纠正的精度可以达到1像元。该方法能够有效解决线阵环扫式卫星影像几何畸变大的问题,提供高精度影像产品,具有重要的应用价值。
The new linear array circular scanning optical remote sensing satellite has achieved both super large width and high resolution through circular scanning perpendicular to orbit and along orbit splicing, but its special imaging mode also leads to serious geometric distortion of the image, which must be corrected. A geometric correction method for linear array circular scanning optical remote sensing satellite images is proposed. Firstly, the strict imaging model of linear array circular scanning image is constructed based on the scientific analysis of satellite imaging characteristics. Then, the image is roughly corrected by using image orbit and attitude parameters and open source DEM. Finally, a large number of homonymous points are obtained by using reference orthophoto image matching as control points, and the image was accurately corrected by spline function fitting. In order to verify the effectiveness of the proposed method, experiments were carried out using simulated images, and the results show that the accuracy of the proposed method can reach 1 pixel. This method can effectively solve the problem of large geometric distortion of linear array circular scanning satellite images, provide high-precision image products, and has important application value.
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