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月球表面的铁钛含量分布对月球的起源与演化研究以及月球资源的开发利用都具有重要意义.不同遥感数据获得的铁钛含量常不相同,有必要利用多种遥感数据获得月表铁钛含量,并对反演结果进行对比分析.本文利用Chandrayaan-1搭载的Moon Mineralogy Mapper(M3)两个光学周期(OP1B和OP2C)数据以及“嫦娥一号”搭载的干涉成像光谱仪(IIM)两套定标数据(pc1和pc2)反演虹湾地区铁钛含量.结果表明OP1B和OP2C数据反演该地区铁峰值分别为17.80wt%和17.60wt%,高于pc1的15.80wt%及pc2的14.00wt%,铁均值分别为16.91wt%和16.79wt%,高于pc1的14.11wt%及pc2的13.46wt%.OP2C数据获得虹湾地区0wt%-4wt%钛丰度百分含量最高,达74.56%,高于pc1的54.66%及pc2的62.46%,OP1B数据得到的0wt%-4wt%钛丰度百分含量最低,为37.55%.OP1B和OP2C数据反演虹湾地区钛均值分别为5.35wt%和3.16wt%,pc1和pc2数据反演该地区钛均值分别为4.25wt%和3.65wt%.极低钛和低钛玄武岩占虹湾地区玄武岩的比例约为50%和40%,主要分布于雨海纪月海物质(Im1,Im2)地层单元内;高钛玄武岩所占比例约为10%,主要分布于爱拉托逊纪月海物质(EIm)地层单元内.总体来看,遥感数据获得的玄武岩钛含量呈单峰分布,低钛玄武岩占优,与样品钛含量的双峰分布不同.虹湾地区玄武岩铁钛含量,随其年龄越来越年轻,有增加的趋势.pc2数据光度校正效果最好,pc1数据光度校正精度较低,M3不同光学周期反射率差别较大,光度校正有待改进.
The distribution of iron and titanium on the lunar surface is of great significance to the study of the origin and evolution of the lunar and the development and utilization of the lunar resources.The contents of iron and titanium obtained by different remote sensing data are often different and it is necessary to obtain the content of titanium in the lunar surface by various remote sensing data , And the contrastive results are compared and analyzed.In this paper, two optical cycles (OP1B and OP2C) data of Moon Mineralogy Mapper (M3) and interferometric imaging spectrometer (IIM) equipped with “Chang’e I” Set of calibration data (pc1 and pc2) were used to retrieve iron-titanium in Hongwan area.The results show that the peaks of iron in the area are 17.80wt% and 17.60wt%, respectively, which are higher than that of pc1 and 15.80wt% pc2 14.00wt% and 16.91wt% and 16.79wt% respectively, which is higher than 14.11wt% of pc1 and 13.46wt% of pc2.The OP2C data shows that the content of 0wt% -4wt% titanium in Hongwan is the highest, 74.56%, higher than pc1 54.66% and pc2 62.46%, OP1B data obtained 0wt% -4wt% titanium abundance lowest 37.55% .OP1B and OP2C data inversion Hongwan average titanium were 5.35 wt% and 3.16wt%, pc1 and pc2 data inversion of the region average titanium were 4.25wt% and 3.65wt%. Very low titanium The low-basalt basalts account for about 50% and 40% of the total basalt in Hongwan area, which is mainly distributed in the Im1 and Im2 strata. The proportion of high-titanic basalts is about 10% Generally speaking, the content of titanium in basalt obtained by remote sensing data shows a single-peak distribution, which is dominated by low-titanic basalts, which is different from the bimodal distribution of titanium in samples.The content of iron-titanium in basalt in Hongwan area , With its age more and more young, there is an increasing trend.pc2 data photometric correction of the best, pc1 data photometric correction accuracy is low, M3 different optical periodic reflectivity difference, photometric correction needs to be improved.