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MERTIS - From laboratory to Mercury

机译:MERTIS-从实验室到水银

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摘要

MERTIS (MERcury Thermal infrared Imaging Spectrometer) is an advanced infrared remote sensing instrument that is part of the ESA mission BepiColombo to planet Mercury. The enabling technology that allows sending the first spectrometer for the thermal infrared spectral range to Mercury is an uncooled microbolometer. With this detector the instrument can be operated in the hot environment of Mercury without the need for a cryogenic cooling system. The challenge is the characterization and calibration of the instrument. We are reporting on the ongoing calibration efforts including laboratory measurements of analogue materials, end-to-end simulations and a detailed characterization of all components and discuss each of the three elements.rnThe measurement of planetary analogue materials in grain sizes <25 μm and at temperatures up to 500℃ relevant for Mercury's surface provide a realistic input signal for the end-to-end simulation. A radiometric and a spectroscopic breadboard model of MERTIS are used to derive all necessary parameters of the instrument, for example the spectral resolution or the wavelength registration on the detector. This parameters support setting up the end-to-end simulation which can then process the spectra of the planetary analog materials as input signal to create a realistic representation of the MERTIS output signal.
机译:MERTIS(水星热红外成像光谱仪)是一种先进的红外遥感仪器,是ESA BepiColombo对水星的任务的一部分。允许将第一台红外光谱范围的光谱仪发送到Mercury的使能技术是未冷却的微辐射热仪。使用该探测器,该仪器可以在水银的高温环境中运行,而无需低温冷却系统。挑战在于仪器的表征和校准。我们正在报告正在进行的校准工作,包括模拟材料的实验室测量,端到端模拟以及所有组件的详细表征,并讨论了这三个元素中的每一个.rn测量粒度小于25μm的行星状模拟材料以及与水星表面有关的最高温度为500℃,为端到端仿真提供了逼真的输入信号。 MERTIS的辐射和光谱面包板模型用于导出仪器的所有必要参数,例如光谱分辨率或检测器上的波长配准。此参数支持设置端到端仿真,然后可以将行星模拟材料的光谱作为输入信号进行处理,以创建MERTIS输出信号的真实表示。

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