Comparison of AVIRIS and Hyperion for Hyperspectral Mineral Mapping
Comparison of AVIRIS and Hyperion for Hyperspectral Mineral Mapping
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作者：
F. Kruse
1.0介绍0.4至2.5 μm的光谱范围提供了有关许多重要的地球表面矿物的丰富信息（Clark等人，1990年）。特别是，2.0至2.5 μm的光谱范围涵盖了许多地质单元和热液蚀变组合中常见的含羟基矿物、硫酸盐和碳酸盐的光谱特征。成像光谱仪或“高光谱”传感器提供地球表面的空间连续光谱和光谱连续图像的独特组合，其允许这些矿物的空间映射（Goetz等人，1985年）。自20世纪80年代初以来，研究人员就可以获得机载高光谱数据，并且它们用于矿物测绘的用途已经得到了很好的确立（Goetz等人，1985; Kruse和Lefkoff，1993;博德曼和Kruse，1994;博德曼等人，1995; Kruse等人，1999年）。当前的机载传感器为各种科学学科提供高空间分辨率（2- 20米）、高光谱分辨率（10- 20纳米）和高SNR（>500：1）数据（绿色等人，2001; Kruse等人，2000年）。
1.0 Introduction The 0.4 to 2.5 μm spectral range provides abundant information about many important Earth-surface minerals (Clark et al., 1990). In particular, the 2.0 to 2.5 μm spectral range covers spectral features of hydroxyl-bearing minerals, sulfates, and carbonates common to many geologic units and hydrothermal alteration assemblages. Imaging Spectrometers, or “Hyperspectral” sensors provide the unique combination of both spatially contiguous spectra and spectrally contiguous images of the Earth's surface that allows spatial mapping of these minerals (Goetz et al., 1985). Airborne hyperspectral data have been available to researchers since the early 1980s and their use for mineral mapping is well established (Goetz et al., 1985; Kruse and Lefkoff, 1993; Boardman and Kruse, 1994; Boardman et al., 1995; Kruse, et al., 1999). Current airborne sensors provide high-spatial resolution (2-20m), high-spectral resolution (10-20nm), and high SNR (>500:1) data for a variety of scientific disciplines (Green et al., 2001; Kruse et al., 2000).