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In this paper, a new algorithm is proposed for civil airport runway detection in polarimetric synthetic aperture radar (POLSAR) image based on unsupervised classification. First, the contents of POLSAR image are classified into ten categories with scattering characteristics of terrain and Wishart classifier; then suspected airport areas are extracted from classification result based on the power property...
Conventional ground-based air pollution observations are difficult to indicate the spatial distribution of pollutant and its changes. To overcome the difficulty, this paper proposes a method which is used to monitor the distribution of urban air pollution by using remote sensing technology. The method uses surface reflectance image to extract the weak atmospheric information from MODIS data, and then...
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