基于Clementine热红外数据的Apollo17登月点区域氧化钙含量反演

发布时间：2018-04-09 21:46

本文选题：月球　切入点：Clementine　出处：《地球学报》2015年02期

【摘要】：为了研究利用Clementine热红外数据反演月球表面岩石的氧化钙(Ca O)含量,论文选取了两景覆盖Apollo17登月点的Clementine热红外影像,将其覆盖的区域选为研究区。利用月球表面温度物理模型模拟月表温度,结合普朗克函数,完成发射率反演。在此基础上,对LPI中35个除Apollo17登月计划外所采集的样品Ca O含量与其热红外发射率特征做回归统计分析,发现存在很好的线性关系(R2=0.661)。由此,基于Clementine热红外发射率实现了研究区Ca O含量反演。通过利用LPI Apollo17月岩(壤)样品实际Ca O含量分析数据对反演结果进行精度评价,发现8组反演值与实际值的相对误差最小为1.77%,最大为9.29%,均方根误差为0.767。研究结果表明,使用发射率进行Ca O含量反演方法可行,为利用Clementine热红外数据对月表矿物成分含量定量反演提供一种新的思路。
[Abstract]:In order to study the Clementine thermal infrared data for retrieving the content of calcium oxide (Cao) in rocks on the lunar surface, two scenes of Clementine thermal infrared images covering the landing point of Apollo17 were selected, and the area covered by the image was selected as the study area.The physical model of lunar surface temperature is used to simulate the monthly surface temperature, and the emissivity inversion is completed with Planck function.On this basis, the regression statistical analysis was made between the Ca O content and the thermal infrared emissivity of 35 samples in LPI except for the Apollo17 lunar landing plan. It was found that there was a good linear relationship between R2O and 0.661C.Therefore, the inversion of Cao content in the study area is realized based on the Clementine thermal infrared emissivity.By using the data of LPI Apollo17 lunar rock (soil) sample to evaluate the accuracy of inversion, it is found that the relative error between the inversion value and the actual value is 1.77, the maximum is 9.29 and the root mean square error is 0.767.The results show that it is feasible to use emissivity to retrieve Cao content, which provides a new idea for quantitative inversion of monthly mineral content using Clementine thermal infrared data.
【作者单位】：吉林大学地球探测科学与技术学院;
【基金】：国家自然科学基金项目(编号:41372337;41373068)资助
【分类号】：P184.5

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