ASD surface reflectance spectra

Reflectance measurements in 2151 spectral bands spreading from the visible to the shortwave infrared (0.35 and 2.5 microns) acquired using four ASD spectroradiometers. The objective was to collect a large set of material samples representative of the urban landscape. Some measurements were performed simultaneously over the same samples with a thermal infrared radiometer (CIMEL) or a SOC410-DHR handheld reflectometer. The measurements were acquired in reflectance mode, based on regular measurement of a white spectralon plate. Pictures and graphs are available for each sample. Check the README file to get more information on the data organisation and characteristics.本数据集包含4台ASD光谱辐射计（ASD spectroradiometers）采集的反射率测量数据，覆盖可见光至短波红外波段的2151个光谱通道，波段范围为0.35~2.5微米。 本次数据采集的目标为获取大量能够表征城市地表景观的代表性物质样本数据。 针对部分样本，研究人员同时采用热红外辐射计（CIMEL）或SOC410-DHR型手持式反射率仪开展了同步测量。 所有测量均采用反射率模式开展，以白色Spectralon白板的定期测量作为光谱校准依据。 每份样本均配有对应的图片与图表。 如需了解数据集的组织形式与详细特征，请查阅README文件。