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肯尼迪航天中心(KSC)的高光谱遥感数据库

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简介:
肯尼迪航天中心的高光谱遥感数据库汇集了该地区详尽的地理与环境信息,为科研人员提供独特的数据资源,支持空间技术、地球科学及生态研究。 On March 23, 1996, NASAs AVIRIS (Airborne Visible/Infrared Imaging Spectrometer) instrument collected data over the Kennedy Space Center (KSC) in Florida. The AVIRIS collects information across 224 bands of 10 nm width with center wavelengths ranging from 400 to 2500 nm. Data acquired at an altitude of approximately 20 kilometers have a spatial resolution of 18 meters. After eliminating water absorption and low signal-to-noise ratio (SNR) bands, the analysis utilized 176 bands. Training data were selected using land cover maps derived from color infrared photography provided by KSC and Landsat Thematic Mapper (TM) imagery. A vegetation classification scheme was developed by KSC personnel to define functional types that are discernible at the spatial resolution of both Landsat and AVIRIS data. The challenge in this environment is distinguishing between certain vegetation types due to their similar spectral signatures. For classification purposes, 13 classes representing various land cover types occurring within this area were defined for the site.

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