高分四号静止轨道卫星高精度在轨几何定标

发布时间：2018-05-05 11:14

本文选题：静止轨道卫星 + 高分四号　；参考：《测绘学报》2017年01期

【摘要】：高分四号是世界上第一颗静止轨道高分辨率光学遥感卫星,高精度的几何定标是确保其成像几何质量的关键。本文分析了静止轨道卫星成像几何误差源及成像区域特点,提出了其严格几何成像模型;并在此基础上提出了静止轨道卫星面阵传感器在轨几何定标模型与定标参数估计方案。本文利用Landsat 8数字正射影像与GDEM2数字高程模型对高分四号卫星进行在轨几何定标,结果表明,通过严格的几何定标,可见光近红外传感器与中红外传感器的内部畸变在沿轨与垂轨方向上均稳定优于1个像素,通过统计分析可知,高分四号静止轨道卫星影像的绝对定位精度会受到成像时间与成像角度的影响而存在显著的波动。
[Abstract]:Gao Fen 4 is the world's first geostationary orbit high resolution optical remote sensing satellite. High precision geometric calibration is the key to ensure its imaging geometric quality. In this paper, the geometric error sources and imaging region characteristics of geostationary orbit satellite imaging are analyzed, and its strict geometric imaging model is proposed, and a calibration model and calibration parameter estimation scheme for geostationary orbit satellite array sensor are presented. In this paper, Landsat 8 digital orthophoto image and GDEM2 digital elevation model are used to calibrate the orbit geometry of Gaofen 4 satellite. The results show that, by means of strict geometric calibration, The internal distortion of the visible near infrared sensor and the middle infrared sensor is more stable than 1 pixel along the rail and vertical rail. The absolute positioning accuracy of Gaofen 4 geostationary satellite image is affected by imaging time and imaging angle.
【作者单位】：武汉大学测绘遥感信息工程国家重点实验室;武汉大学资源与环境科学学院;中国资源卫星应用中心;
【基金】：国家973计划(2014CB744201;2012CB719902;2012CB719901) 国家自然科学基金(41371430;91438112;91438203;91438111;40901209)~~
【分类号】：P237

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