用SAR与TM数字复合图像编制1:5万～1:10万解译地质图的优点及精度分析  

DIGITAL SAR-TM COMBINATION IMAGE FOR 1:50,0001:100,000 INTERPRETATION GEOLOGIC MAPPING

作　　者：朱亮璞[1] 龙云林[2] 徐茂松 

机构地区：[1]北京大学地质系 [2]湖南省遥感中心 [3]林业部规划院资源监测中心

出　　处：《国土资源遥感》1991年第2期48-52,共5页Remote Sensing for Land & Resources

基　　金：地质行业科学技术发展基金资助项目

摘　　要：ＳＡＲ与ＴＭ数字复合处理技术，能为地质解译及地质制图提供一份空间与波谱信息都比较丰富 的图像。复合图像的优点是：地物细节详尽，立体感强，图像上阴影又少，便于进行各种图像增 强处理和与其他地学资料对比分析、拟合。试验表明，除岩性解译能力较差外，其它地质体的解译能完全或基本满足中等（大）比例尺区域地质调查的要求。The present paper deals with the technique of digital SAR-TM combination as well as the applicability of the combination image for geologic mapping. The process of combination takes on three steps. At first, Six seperate strips of radar data at 3M pixel resolution are mosaiced together to form a 900km2 image. Secondly, the SAR and TM data were respectively registered to GaussKruger projection system' Finally, the false color composite image is produced in following manner: TM4 + SAR(R), TIS + SAN(G), and TM3 + SAR(B). Compared with the original image. Digital SAR-TM combination image has following advantages ; 1 ) The geologic interpretability is enhanced, 2 ) the geometric distortion of terrain featurs is improved, 3) the distinction of the whole image is intensified, because the local shadow area can be diminished due to the supplement of SAR and TM each other. The image of digital SAR-TM combination have abundant remote sensing information. It' is a powerful tool for geologic interpretation and mapping (on scale 1: 50, 000-1: 100, 000 ).

关 键 词：地质图 精度 编制 复合图像 SAR 

分 类 号：P285.1[天文地球—地图制图学与地理信息工程]