基于天宫一号高光谱成像仪的替代光谱定标方法精度对比分析
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中国科学院 遥感与数字地球研究所,中国科学院大学,中国科学院 遥感与数字地球研究所,中国科学院 遥感与数字地球研究所,中国科学院 遥感与数字地球研究所

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国家自然科学基金-高光谱遥感在轨替代定标模型与方法研究(编号41271370);国家自然科学基金-高光谱遥感智能观测机理与信息处理模型研究(编号:41325004);国家自然科学基金项目(面上项目,重点项目,重大项目)


A comparative analysis of the accuracy of alternative spectral calibration methods based on TG-1 hyperspectral imager
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Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences;University of Chinese Academy of Sciences,Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences

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    摘要:

    基于天宫一号高光谱成像仪2012年3月6日获取的可见近红外谱段数据, 分别进行了氧气吸收通道的同步和非同步替代光谱定标, 为了提高非同步替代光谱定标结果的可靠性, 利用与同步实验日期相近的另外两景图像进行了多次非同步替代光谱定标.结果表明: 基于三景图像的非同步替代光谱定标结果相近, 差异小于0.2nm, 标准差小于0.11; 同步和非同步两种替代光谱定标结果差异小于0.3nm; 以星上定标结果为基准, 两种替代光谱定标方法的误差分别为0.384nm和0.489nm, 二者差异较小.可见, 可采用非同步替代光谱定标方法对高光谱成像仪进行高频次的光谱定标.

    Abstract:

    Based on the visible near-infrared (VNIR) data acquired by TG-1 hyperspectral imager on March 6, 2012, synchronous and non-synchronous alternative spectral calibration were assessed at the oxygen band. In order to improve the reliability of non-synchronous alternative spectral calibration result, other two images with similar imaging date were used to achieve multiple calibrations. The results show that non-synchronous alternative spectral calibration results based on three images are similar, difference is less than 0.2nm, and standard deviation is less than 0.11. Difference between synchronous and non-synchronous alternative spectral calibration results is less than 0.3nm. Compared with the TG-1 on-board spectral calibration results, the error of the two alternative spectral calibration methods is 0.384nm and 0.489nm, respectively. The accuracy difference is relatively small. Non-synchronous alternative spectral calibration method can be used to achieve high-frequency spectral calibration for hyperspectral imager.

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张雅琼,张文娟,陈正超,张兵.基于天宫一号高光谱成像仪的替代光谱定标方法精度对比分析[J].红外与毫米波学报,2015,34(3):360~367]. ZHANG Ya-Qiong, ZHANG Wen-Juan, CHEN Zheng-Chao, ZHANG Bing. A comparative analysis of the accuracy of alternative spectral calibration methods based on TG-1 hyperspectral imager[J]. J. Infrared Millim. Waves,2015,34(3):360~367.]

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  • 收稿日期:2014-04-07
  • 最后修改日期:2014-05-11
  • 录用日期:2014-05-16
  • 在线发布日期: 2015-09-28
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