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首页> 外文会议>Conference on Sensors, Systems, and Next-Generation Satellites VI Sep 23-26, 2002 Agia Pelagia, Crete, Greece >On-orbit Radiometric Calibration Over Time and Between Spacecraft Using the Moon
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On-orbit Radiometric Calibration Over Time and Between Spacecraft Using the Moon

机译：随着时间的推移以及使用月球在航天器之间进行在轨辐射度校准

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摘要

The Robotic Lunar Observatory (ROLO) project has developed a spectral irradiance model of the Moon that accounts for variations with lunar phase through the bright half of a month, lunar librations, and the location of an Earth-orbiting spacecraft. The methodology of comparing spacecraft observations of the Moon with this model has been developed to a set of standardized procedures so that comparisons can be readily made. In the cases where observations extend over several years (e.g., SeaWiFS), instrument response degradation has been determined with precision of about 0.1% per year. Because of the strong dependence of lunar irradiance on geometric angles, observations by two spacecraft cannot be directly compared unless acquired at the same time and location. Rather, the lunar irradiance based on each spacecraft instrument calibration can be compared with the lunar irradiance model. Even single observations by an instrument allow inter-comparison of its radiometric scale with other instruments participating in the lunar calibration program. Observations by SeaWiFS, ALI, Hyperion and MTI are compared here.
机译：机器人月球观测站（ROLO）项目开发了月球的光谱辐照度模型，该模型可以解释在一个月的明亮半月中月相的变化，月球的自由度以及绕地球飞行的航天器的位置。将月球航天器观测值与该模型进行比较的方法已开发为一套标准化程序，因此可以轻松进行比较。在观测持续数年的情况下（例如SeaWiFS），已确定仪器响应退化的精度约为每年0.1％。由于月球辐照度强烈依赖于几何角度，因此除非直接在同一时间和地点获得，否则无法直接比较两个航天器的观测结果。相反，可以将基于每个航天器仪器校准的月球辐照度与月球辐照度模型进行比较。即使使用仪器进行一次观测，也可以将其辐射度标尺与参与月球校准计划的其他仪器进行比对。这里比较了SeaWiFS，ALI，Hyperion和MTI的观测结果。

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