CAJ | 학술논문

文章在遥感图像处理软件ENVI的支持下，以汶川地震的极重灾区汶川县为研究区，选取2007年、2008年和2010年这3个时期的Landsat-5 TM数据为数据源，提取分析了地震前后TM数据的相关信息。利用相关系数矩阵、特征向量和特征值，按照最佳波段组合原则，对地震前后的TM影像进行了多种波段组合试验和比值分析。经分析得出以TM3、TM4、TM5波段组合为基础，参考其他组合（如TM1、TM4、TM5，TM4、TM2、TM7和 NDVI、TM5/TM3、TM4/TM3的组合）容易解译和判读 TM遥感影像的相关地物数据类型，为地震解译和灾害评估提供了理论依据和支撑。
문장재요감도상처리연건ENVI적지지하，이문천지진적겁중재구문천현위연구구，선취2007년、2008년화2010년저3개시기적Landsat-5 TM수거위수거원，제취분석료지진전후TM수거적상관신식。이용상관계수구진、특정향량화특정치，안조최가파단조합원칙，대지진전후적TM영상진행료다충파단조합시험화비치분석。경분석득출이TM3、TM4、TM5파단조합위기출，삼고기타조합（여TM1、TM4、TM5，TM4、TM2、TM7화 NDVI、TM5/TM3、TM4/TM3적조합）용역해역화판독 TM요감영상적상관지물수거류형，위지진해역화재해평고제공료이론의거화지탱。
With the support of ENVI(The Environment for Visualizing Images)that is a kind of remote sensing image processing software, the paper takes Wenchuan region as a research region which is the most serious area in Wenchuan earthquake. It selects three different periods of Landsat-5 TM data in the year of 2007, 2008 and 2010 and calculates the relevant statistical information respectively. It carries out all kinds of band combination test and ratio analysis based on TM remote sensing images before and after Wenchuan earthquake, by using correlative coefficient matrix, covariance and correlation, according to the principles of the best band combination. The conclusion is that based on the combination of TM bands(4, 3, 5)and has the reference with other combinations(such as TM1, TM4, TM5;TM4, TM2, TM7 and NDVI, TM5/TM3, TM4/TM3 combina-tions)as references, it is easy to interpret the types of features of TM image and the change of features, which can provide the convincing theoretical basis and support for seismic interpretation and disaster assessment.