高光谱遥感器的光谱定标

Spectral Calibration of The Hyperspectral Optical Remote Sensor

高光谱遥感器光谱性能参数的准确定标是高光谱遥感器数据定量应用的基本前提。本文基于单色准直光标定法对高光谱遥感器进行了光谱性能参数定标,通过数据采集软件及数据处理软件对高光谱遥感器光谱性能参数定标数据进行了分析。分析结果显示:定标测试的重复性在1 h内小于0.2 nm,在20 h内小于0.35 nm。光谱定标结果表明:高光谱遥感器的平均光谱分辨率为4.94 nm,且各高光谱遥感器空间维光谱分辨率均小于5 nm,典型谱段的平均带宽均在6 nm左右。

Accurate calibration of hyperspectral optical remote sensing spectral performance parameters is the basic premise of the quantitative application of hyperspectral optical remote sensing data.Based a monochromatic collimated cursor titration hyperspectral optical remote sensor calibration of the spectral performance parameters,spectral performance parameters of high-spectral optical remote sensor calibration data were analyzed by the data acquisition software and data processing software.The analysis results show that the calibration test repeatability is less than 0.2 nm within 1 h,and less than 0.35 nm within 20 h.The spectral scaling results show that the average spectral resolution of hyperspectral optical remote sensor is 4.94 nm,and the spatial dimension of the high-spectral optical remote sensor spectral resolution is less than 5 nm,the average of the typical spectral bandwidth is about 6 nm.