The Mercury Radiometer and Thermal Infrared Spectrometer (MERTIS) for the BepiColombo mission
The Mercury Radiometer and Thermal Infrared Spectrometer (MERTIS) for the BepiColombo mission
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DOI：
10.1016/j.pss.2008.09.019
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发表时间：
2010-01-01
影响因子：
2.4
通讯作者：
Helbert, J.
中科院分区：
文献类型：
--
作者：
Hiesinger, H.;Helbert, J.
水星辐射计和热红外光谱仪 (MERTIS) 计划于 2014 年在 BepiColombo 水星行星轨道飞行器 (MPO) 上发射，是一种用于研究水星表面成分和矿物学的创新仪器。 MERTIS 将非冷却光栅推扫式红外光谱仪 (TIS) 与辐射计 (TIR) 结合在一起，分别在 7-14 和 7-40 μm 的波长范围内工作。 MERTIS 观测的全球空间分辨率约为 500 m，约 5-10% 的地表空间分辨率优于 500 m。热红外范围提供独特的诊断功能来研究水星的表面成分。特别是，长石可以很容易地检测和表征，因为它们在 7-14 μm 范围内显示出几种诊断光谱特征：克里斯蒂安森特征、剩余斯特拉伦带和透明度特征。此外，MERTIS 还可以对元素硫、辉石、橄榄石和其他复杂矿物进行识别和绘图。 MERTIS 的科学目标包括：(1) 表征水星表面成分；(2) 识别造岩矿物；(3) 绘制表面矿物学图；(4) 研究表面温度变化和热惯性。为了准备 MERTIS 数据解释，我们正在行星发射率实验室 (PEL) 中对适当的模拟材料进行光谱测量，并正在为这些材料建立各种晶粒尺寸的光谱库（柏林发射率数据库 (BED)）。 (C) 2008 Elsevier Ltd. 保留所有权利。
Scheduled for launch on board the BepiColombo Mercury Planetary Orbiter (MPO) in 2014, the Mercury Radiometer and Thermal Infrared Spectrometer (MERTIS) is an innovative instrument for studying the surface composition and mineralogy of planet Mercury. MERTIS combines an uncooled grating push broom IR-spectrometer (TIS) with a radiometer (TIR), which will operate in the wavelength region of 7-14 and 7-40 mu m, respectively. The spatial resolution of the MERTIS observations will be about 500 m globally and better than 500 m for approximately 5-10% of the surface. The thermal infrared range offers unique diagnostic capabilities to study the surface composition of Mercury. In particular, feldspars can easily be detected and characterized, because they show several diagnostic spectral signatures in the 7-14 mu m range: the Christiansen feature, reststrahlen bands, and the transparency feature. In addition, MERTIS will allow the identification and mapping of elemental sulfur, pyroxenes, olivines, and other complex minerals. The scientific objectives of MERTIS include: (1) characterization of Mercury's surface composition, (2) identification of rock-forming minerals, (3) mapping of the surface mineralogy, and (4) study of surface temperature variations and the thermal inertia. In preparation for the MERTIS data interpretation, we are performing spectral measurements of appropriate analogue materials in the Planetary Emissivity Laboratory (PEL) and are building a spectral library (Berlin Emissivity Database (BED)) of these materials for a variety of grain sizes. (C) 2008 Elsevier Ltd. All rights reserved.