针对高光谱成像仪的在轨定标,提出三种交叉定标技术方案,分析了时相匹配、视场匹配、光谱匹配和几何匹配等 交叉定标过程中的关键单元技术,结合HJ-1A/HSI、EO-1/Hyperion等开展了交叉定标算法模型验证。通过 这三种技术方案的应用,与场地定标相结合,将有利于提高在轨定标的频次、快速校验场地定标系数,有效 提升高光谱数据的定量化应用水平。

Due to the need of post-launch calibration of hyperspectral imagers, three cross-calibration technical solutions are proposed. Matching technologies including field, time, geometry and spectrum in the process of cross-calibration are analysed. Algorithms and models in matching technologies are validated by the use of the data of HJ-1A/HSI, EO-1/Hyperion. By the application of three technical solutions with site-calibration method, the frequency of post-launch calibration can be improved and site-calibration coefficients can be validated quickly. The level of quantitative application of hyperspectral data can be promoted effectively.