CAJ | 학술논문

针对利用线性模型提取矿物含量精度较低的问题，以波长范围为350～2500 nm的岩石光谱为数据源，基于光谱匹配方法进行矿物识别，应用简化的 Hapke模型将岩石样品反射率转换为单次反照率，利用线性模型分解单次反照率进行含量提取，并通过分段滤波及建立区域光谱库的方法提高识别精度，建立了一种基于实测光谱数据的矿物含量提取方法。通过对包古图V号岩体光谱数据的分析，与X射线衍射结果相比，该方法对长石类矿物的识别精度为100％，含量提取精度为80.5％；对粘土类蚀变矿物的识别精度为92.2％，含量提取的精度为92.36％。该方法将矿物学共生关系加入到矿物识别方法中，保证了结果的可靠性；提出了分段滤波的预处理思路，避免了滤波算法对光谱波形及吸收特征的影响，并且据有较好的去噪效果；应用Hapke模型进行实测的岩石光谱解混，能避免复杂的光谱非线性分解计算，从理论上提高矿物含量提取的精度和计算的效率。该方法对快速分析蚀变信息等工作具有一定的指导意义。
침대이용선성모형제취광물함량정도교저적문제，이파장범위위350～2500 nm적암석광보위수거원，기우광보필배방법진행광물식별，응용간화적 Hapke모형장암석양품반사솔전환위단차반조솔，이용선성모형분해단차반조솔진행함량제취，병통과분단려파급건립구역광보고적방법제고식별정도，건립료일충기우실측광보수거적광물함량제취방법。통과대포고도V호암체광보수거적분석，여X사선연사결과상비，해방법대장석류광물적식별정도위100％，함량제취정도위80.5％；대점토류식변광물적식별정도위92.2％，함량제취적정도위92.36％。해방법장광물학공생관계가입도광물식별방법중，보증료결과적가고성；제출료분단려파적예처리사로，피면료려파산법대광보파형급흡수특정적영향，병차거유교호적거조효과；응용Hapke모형진행실측적암석광보해혼，능피면복잡적광보비선성분해계산，종이론상제고광물함량제취적정도화계산적효솔。해방법대쾌속분석식변신식등공작구유일정적지도의의。
To improve the accuracy of mineral content extraction by linear decomposition model ,a method was established , which took rock spectra with wavelength from 350 to 2 500 nm as the data source ,identified minerals based on spectral matching methods ,applied Hapke model to transform spectral reflectance into single scattering albedo and resolved single scattering albedo to get mineral content .In this method ,sectional noise filtering and regional mineral spectra library were added to improve the identifying accuracy .Based on the analysis on the fifth Baogutu rock body ,compared with XRD results ,accuracies of quartz , feldspar class and altered minerals identification were 75% ,100% and 92.2% separately .Accuracy of the content extraction of feldspar class ,hornblende and altered minerals were 80.5% ,64% ,92.36% separately .This method added mineralogy symbi‐otic relationship into mineral identification to ensure the reliability ,proposed the idea of sectional noise filtering to avoid the in‐fluence of filtering algorithm ,applied the single scattering albedo to avoid the complex nonlinearly calculations to improve the ac‐curacy theoretically .This method has a certain guiding significance for the work such as rapid analysis of alteration information .