摘要
利用CBERS-2、Landsat-7 ETM+、ASTER遥感影像的光谱信息并结合实测光谱数据,获得艾比湖水体光谱特征。在对3种卫星影像进行几何校正、大气校正、图像镶嵌等预处理的基础上,提取各卫星影像上样点的各波段灰度值。然后对其求均值后生成反射折线图,通过与艾比湖水体光谱特征曲线进行对比,来选择最适合艾比湖水体研究的卫星影像。
Combining with measured spectral data, this study uses CBERS -2, Landsat -7 ETM ＋ and ASTER ima- ges to obtain Ebinur lake water spectral characteristics. It extracts each band grey value of the sample points from three kinds of satellite images, which based on geometric correction, atmosphere correction, image mosaic, etc. The reflection line charts of grey value was created by the mean value of the sample points. Compared the results with measured spec- tral data, the most suitable satellite images for water research of Ebinur Lake was found.
出处
《城市勘测》
2013年第1期21-24,共4页
Urban Geotechnical Investigation & Surveying
