光学遥感大气订正方法与软件应用分析

Techniques and Software's Analysis on Atmospheric Correction of Optical Remote Sensing Imagery

本文首先介绍了常见的若干大气订正方法,对于海色遥感,高光谱遥感,机载图像、多角度图像,考虑其特殊性,并介绍了其大气订正的新进展;接着分析了几个当前发行的大气订正软件或者模块;最后,我们提出了大气订正中存在的问题和发展方向。

Several atmospheric correction methods were summarized firstly. These methods are dark object subtraction method, histogram matching method, empirical line method, soil line method, invariant-object method, cloud-shadow method, vegetation index related method, contrast reduction method, step function method, clustering matching method etc. These methods are related to aerosol retrieval methods, substantially. Then several atmospheric correction softwares or modules were introduced, which include ATREM （ The Atmospheric Removal Program）, HATCH （The high accuracy atmospheric correction for hyperspectral data）, EXACT （Exact Atmospheric Correction Technique）, ATCOR （Atmospheric and Topographic Correction Model）, SMAC （Simplified Method for the Atmospheric Correction）, FLAASH （Fast Line-of-sight Atmospheric Analysis of Spectral Hypercubes）, ACORN （Atmospheric CORrection Now） etc. Sea color remote sensing, hyper spectral remote sensing, airborne remote sensing and multi-angular remote sensing have their particularities, their atmospheric correction methods are introduced, respectively. The problems and the way on how to improve the precision of atmospheric correction were also discussed.