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遥感技术是全球性的课题，在全世界范围获得了迅速的发展和应用。遥感的基础研究和应用研究是以地物波谱数据为依据的。地
Remote sensing technology is a global issue and has gained rapid development and application all over the world. The basic research and applied research of remote sensing are based on the object spectral data. Ground