中国空间科学技术

中国空间科学技术 ›› 2022, Vol. 42 ›› Issue (6): 12-22.doi: 10.16708/j.cnki.1000-758X.2022.0079

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光学遥感卫星在轨星上绝对辐射定标的研究进展

满益云，陈世平   

  1. 1 钱学森空间技术实验室，北京100094
    2 中国空间技术研究院，北京100094
  • 出版日期:2022-12-25 发布日期:2022-11-09

Research progress of on-board absolute radiometric calibration for optical remote sensing satellite

MAN Yiyun，CHEN Shiping   

  1. 1 Qian Xuesen Laboratory of Space Technology，Beijing 100094，China
    2 China Academy of Space Technology，Beijing 100094，China
  • Published:2022-12-25 Online:2022-11-09

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摘要： 高精度绝对辐射定标是实现光学遥感定量化应用的重要前提。首先简要介绍了绝对辐射定标，接下来系统性地梳理国内外发展现状及发展趋势，重点分析了太阳反射谱段光学遥感卫星在轨星上绝对辐射定标的各种方法，包括遥感器上定标设备、恒星和月球定标、高精度参考交叉定标卫星和同步绝对辐射定标仪等，其中前两类已经在轨实现精度优于2%~5%，后两类计划当中精度优于1%。最后总结发展规律和发展启示，给出高精度光学遥感卫星在轨星上绝对辐射定标发展的几点讨论。

关键词: 定量化应用, 绝对辐射定标, 星上定标, 光学遥感卫星, 太阳反射谱段

Abstract: In order to realize the quantificational application for optical remote sensing satellites，the very important precondition is the absolute radiometric calibration and correction.The status and characteristics of some typical absolute radiometric calibration were introduced，and the methods of absolute radiometric calibration for typical solar reflective spectrum optical remote sensing satellites were analyzed，including onboard calibration device of the remote sensor，stellar and lunar calibration，high accuracy reference crosscalibration satellite and piggy-back calibrator.The first two methods were on orbit and the accuracy was better than 2%~5%，the last two methods are in development and the accuracy will be better than 1%.The development trend and revelation were summarized and some discussion were made in the end.

Key words: quantificational application, absolute radiometric calibration, on-board calibration, optical remote sensing satellite, solar reflective spectrum