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Calibration Procedures for Imaging Spectrometers: Improving Data Quality from Satellite Missions to UAV Campaigns

机译：成像光谱仪的校准程序：提高从卫星任务到无人机战役的数据质量

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The Calibration Home Base (CHB) at the Remote Sensing Technology Institute of the German Aerospace Center (DLR-IMF) is an optical laboratory designed for the calibration of imaging spectrometers for the VNIR/SWIR wavelength range. Radiometric, spectral and geometric characterization is realized in the CHB in a precise and highly automated fashion. This allows performing a wide range of time consuming measurements in an efficient way. The implementation of ISO 9001 standards ensures a traceable quality of results. DLR-IMF will support the calibration and characterization campaign of the future German spaceborne hyperspectral imager EnMAP. In the context of this activity, a procedure for the correction of imaging artifacts, such as due to stray light, is currently being developed by DLR-IMF. Goal is the correction of in-band stray light as well as ghost images down to a level of a few digital numbers in the whole wavelength range 420-2450 nm. DLR-IMF owns a Norsk Elektro Optikks HySpex airborne imaging spectrometer system that has been thoroughly characterized. This system will be used to test stray light calibration procedures for EnMAP. Hyperspectral snapshot sensors offer the possibility to simultaneously acquire hyperspectral data in two dimensions. Recently, these rather new spectrometers have arisen much interest in the remote sensing community. Different designs are currently used for local area observation such as by use of small unmanned aerial vehicles (sUAV). In this context the CHB's measurement capabilities are currently extended such that a standard measurement procedure for these new sensors will be implemented.
机译：德国航空航天中心遥感技术研究所（DLR-IMF）的校准本垒（CHB）是一个光学实验室，用于对VNIR / SWIR波长范围的成像光谱仪进行校准。 CHB中以精确且高度自动化的方式实现了辐射，光谱和几何特征。这允许以有效的方式执行各种耗时的测量。 ISO 9001标准的实施确保了结果的可追溯性。 DLR-IMF将支持未来德国星载高光谱成像仪EnMAP的校准和表征活动。在该活动的背景下，DLR-IMF目前正在开发一种用于校正诸如由于杂散光引起的成像伪影的程序。目标是在整个420-2450 nm的波长范围内将带内杂散光和幻影图像校正到几个数字的水平。 DLR-IMF拥有经过全面表征的Norsk Elektro Optikks HySpex机载成像光谱仪系统。该系统将用于测试EnMAP的杂散光校准程序。高光谱快照传感器提供了同时获取二维高光谱数据的可能性。最近，这些相当新的光谱仪引起了遥感界的极大兴趣。当前，例如通过使用小型无人机（sUAV），将不同的设计用于局部观察。在这种情况下，CHB的测量功能目前已得到扩展，从而将为这些新传感器实施标准测量程序。

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