Topographic Normalization of Landsat TM Images in Rugged Terrain Based on the High-resolution DEM Derived from ASTER
A method for topographic correction for TM remote sensing image is presented in rugged terrain,with the help of high-resolution stereo image pairs provided by modern satellite sensors.Topographic effects and atmospheric factors interacted,and severely distorted the true information of surface nature characters.Some popular terrain correction models nowadays,such as the cosine model,Minnaert model,C model,SCS model and so on,are not a quantitative method.The mountain radiant transfer model with more strict physical meaning must be selected to remove terrain effects in mountainous quantitative remote application.However,because of its stringent requirements for digital elevation model DEM in the high precision and high resolution,it limited its development and wider application.Based on ASTER remote sensing stereo image pairs constituted by nadir images and backsight images,relatively high accuracy 15m DEM data was obtained in the study area.Finally putting micro topographic factors and the main atmospheric parameters into Richter mountains radiation model,TM remote sensing image terrain correction was rapidly completed.The results show that this method has a remarkable ability to remove topographic and atmospheric effects,and also provides reliable basis data for surface parameters retrieval of quantitative remote sensing in the rugged terrain.
Yanli Zhang Xin Li
Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences,L Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences,L
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
712-716
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）