多谱段光学遥感探测器配准误差分析

发布时间：2018-01-16 00:24

本文关键词：多谱段光学遥感探测器配准误差分析　出处：《航天返回与遥感》2017年02期 　论文类型：期刊论文

【摘要】：多光谱相机获取的同一目标在不同谱段图像中几何位置不同,造成了多谱段图像配准误差。而多谱段图像谱段配准问题是制约卫星数据规模化与产业化应用的重要因素之一。文章针对常见的同一光学系统多光谱成像模式,建立多谱段探测器配准误差模型,从空间相机设计角度考虑,仅考虑图像之间的位置关系,分别分析延时成像及非延时成像时造成谱段配准误差的因素,以及各因素对多谱段图像配准的影响。多谱段图像配准误差无延时成像时与各谱段像主点观测精度有关,延时成像时像主点位置观测精度和姿态指向精度影响较大,卫星速度观测精度影响较小。最后根据地面图像处理配准误差要求,仿真分析得出各引起配准误差因素的指标要求,可以为多光谱遥感器的设计和应用提供参考。
[Abstract]:The geometric position of the same target obtained by multispectral camera is different in different spectral images. The problem of multi-spectral image registration is one of the important factors restricting the scale and industrialization of satellite data. This paper aims at the common multi-spectral imaging mode of the same optical system. The registration error model of multi-spectral detector is established. Considering the space camera design only the position relationship between images is considered and the factors that cause the spectral registration error in delayed imaging and non-delayed imaging are analyzed respectively. And the influence of various factors on the multi-spectral image registration. When the multi-spectral image registration error is no delay imaging, it is related to the observation accuracy of the main points of each spectrum image. In delayed imaging, the position observation accuracy and attitude pointing accuracy of the image main point have a great influence, while the satellite velocity observation accuracy is less. Finally, according to the ground image processing registration error requirements. The results of simulation analysis show that the index requirements of the registration error factors can be used as a reference for the design and application of multispectral remote sensors.
【作者单位】：北京空间机电研究所;
【基金】：国家自然基金(41401410,41401411) 高分对地观测专项基金(GFZX040136) 国家重点研发计划地球观测与导航重点专项基金(2016YFB0500802)
【分类号】：P237
【正文快照】： 0引言光学遥感观测技术需要多谱段对同一目标区域进行观测,通过比较分析同一区域内波谱特性差异对遥感图像判读解译,提取信息。由于光学系统设计、探测器器件等原因,各谱段探测器在焦平面装配时指向角不同,所以星载光学遥感器直接获取的原始多谱段图像各谱段间存在明显的位置

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