首页> 外文会议>IAC;International Astronautical Congress >ILMENITE DETECTION ON THE MOON BY REMOTE SENSING: AN INTEGRATION OF MULTISENSOR DATASETS OVER MARE AUSTRALE AND MARE INGENII REGIONS
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ILMENITE DETECTION ON THE MOON BY REMOTE SENSING: AN INTEGRATION OF MULTISENSOR DATASETS OVER MARE AUSTRALE AND MARE INGENII REGIONS

机译:遥感对钛铁矿的遥感检测:一体化的多传感器数据集在澳大利亚马累和Ingenii地区

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Ilmenite (FeTiO_3) is considered a key mineral on the Moon, because the oxygen it contains can be extracted andcould be used as life support for human settlement on the Moon and as a propellant. No ilmenite map exists to datebecause ultraviolet (UV) and/or hyperspectral data necessary for its identification were not available until recently.In this study we use Hapke radiative transfer theory to map ilmenite over Mare Australe and Mare Ingenii regions.With this method we compute spectra for different proportions of orthopyroxene, clinopyroxene, plagioclase, olivine,and ilmenite, with varying grain size, chemistry, and degree of maturity. Our baseline remote sensing data set iscreated by integrating Lunar Reconnaissance Orbiter Wide Angle Camera and Clementine UVVIS/NIR data toobtain a 14 band mosaic (320-2000 nm) of each region of study. For pixels where less mature soils are found (i.e., ~1% of the surface that contains minimal amount of glass and agglutinates which are not included in our model) we usean optimisation routine constrained by the "maximum possible ilmenite content" to find the modeled spectrum that isthe most similar to the pixel spectrum, and assign its mineral abundances. We extrapolate ilmenite abundances to theentire regions of study by kriging and validate the model with fifteen lunar soil spectra. We find ilmeniteconcentrations ranging between 0-11 % in Mare Australe region and between 0-6 % in Mare Ingenii region, with aprecision of ± 2.87 %.
机译:钛铁矿(FeTiO_3)被认为是月球上的关键矿物,因为它所含的氧气可以被提取并 可用作人类在月球上定居的生命支持和推进剂。迄今尚无钛铁矿图 因为直到最近才需要进行鉴定所需的紫外线(UV)和/或高光谱数据。 在这项研究中,我们使用Hapke辐射转移理论绘制钛铁矿在Mare Australe和Mare Ingenii地区的地图。 通过这种方法,我们可以计算出不同比例的邻苯二甲,、环庚基ene,斜长石,橄榄石, 和钛铁矿,具有不同的晶粒尺寸,化学性质和成熟度。我们的基准遥感数据集是 通过将“月球侦察轨道飞行器”广角摄像机与Clementine UVVIS / NIR数据相集成而创建 获得每个研究区域的14波段马赛克(320-2000 nm)。对于发现较不成熟土壤的像素(即,〜1 我们使用的玻璃中包含最少量的玻璃和凝集物的表面所占的百分比(我们不包含在模型中) 受“最大可能的钛铁矿含量”约束的优化程序,以找到 最类似于像素光谱,并分配其矿物质丰度。我们将钛铁矿的含量推断为 通过克里金法研究整个研究区域,并用十五个月球土壤光谱对模型进行验证。我们发现钛铁矿 在Mare Australe地区的浓度范围在0-11%之间,在Mare Ingenii地区的浓度在0-6%之间,其中 精度为±2.87%。

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