摘要:
为了加强高精度遥感图像数据在新疆西昆仑等自然地理条件极其恶劣的高海拔、艰险地区数字填图中的应用,提高填图的精度及质量,以麻扎构造混杂岩带填图为例,运用遥感图像预处理(大气校正、几何纠正、影像镶嵌、影像融合、影像裁剪、正射纠正等)、遥感图像增强处理(比值法、主成分分析法等)和地质信息综合分析等方法提取岩石、地层、构造等地质信息,并指导区域地质调查野外工作的开展;总结了SPOT5高精度图像数据在数字填图中的应用方法和效果,认为遥感技术在区域地质调查中起着事半功倍的作用.利用高精度遥感图像数据不仅提高了地质体(特别是构造混杂岩块)边界范围的勾绘精度,对部分非正式填图单位的勾绘也取得一定的成效.
Abstract:
In order to strengthen the application of remote sensing to digital mapping and improve the precision and the quality of geological mapping in West Kunlun of Xinjiang,the authors,by using remote sensing image processing (atmospheric correction,geometric correction,image mosaic,image fusion,image cropping,orthophoto correction etc.),and remote sensing image enhancement processing (ratio method,principal component analysis),and the geological information,extracted much geological information from rocks,strata and tectonics,so as to guide the regional geological survey in field work.The methods applied in digital mapping and the effect of remote sensing technology were summed up.It is held that the geological remote sensing technology plays a multiplier effect in regional geological survey.Through the use of high accuracy remote sensing image data,the authors improved not only the drawing of the boundary range of geological body but also the outlining of part of informal mapping units.
下载: