An advanced Scanning Method for Space-bome Hyper-spectral Imaging System

机译：太空体高光谱成像系统的先进扫描方法

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Space-borne hyper-spectral imagery is an important means for the studies and applications of earth science. High cost efficiency could be acquired by optimized system design. In this paper, an advanced scanning method is proposed, which contributes to implement both high temporal and spatial resolution imaging system. Revisit frequency and effective working time of space-borne hyper-spectral imagers could be greatly improved by adopting two-axis scanning system if spatial resolution and radiometric accuracy are not harshly demanded. In order to avoid the quality degradation caused by image rotation, an idea of two-axis rotation has been presented based on the analysis and simulation of two-dimensional scanning motion path and features. Further improvement of the imagers' detection ability under the conditions of small solar altitude angle and low surface reflectance can be realized by the Ground Motion Compensation on pitch axis. The structure and control performance are also described. An intelligent integration technology of two-dimensional scanning and image motion compensation is elaborated in this paper. With this technology, sun-synchronous hyper-spectral imagers are able to pay quick visit to hot spots, acquiring both high spatial and temporal resolution hyper-spectral images, which enables rapid response of emergencies. The result has reference value for developing operational space-borne hyper-spectral imagers.

机译：星载高光谱成像是地球科学研究和应用的重要手段。通过优化系统设计可以获得高成本效益。本文提出了一种先进的扫描方法，它有助于实现高时间和空间分辨率成像系统。如果对空间分辨率和辐射测量精度的要求不高，则采用两轴扫描系统可以大大改善星载高光谱成像仪的重访频率和有效工作时间。为了避免图像旋转引起的质量下降，在对二维扫描运动路径和特征进行分析和仿真的基础上，提出了一种两轴旋转的思想。通过在俯仰轴上进行地面运动补偿，可以在太阳高度角较小和表面反射率较低的情况下进一步提高成像器的检测能力。还描述了结构和控制性能。阐述了二维扫描和图像运动补偿的智能集成技术。借助这项技术，太阳同步高光谱成像仪能够快速访问热点，同时获取高空间和时间分辨率的高光谱图像，从而能够快速响应紧急情况。该结果对开发可运行的星载高光谱成像仪具有参考价值。

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《International symposium on photoelectronic detection and imaging;ISPDI 2011》|2012年|p.819626.1-819626.11|共11页
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WANG Yue-ming; LANG Jun-Wei; WANG Jian-Yu; JIANG Zi-Qing;
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中图分类光电子技术的应用;
关键词
hyper-spectral; space-borne remote sensing; two-dimensional scanning; revisit period;

机译：高光谱星载遥感;二维扫描重访期;

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An advanced Scanning Method for Space-bome Hyper-spectral Imaging System

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