相关实验视频
Updated: Sep 11, 2025

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Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
Published on: July 30, 2020
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概括
这项研究验证了Fengyun-3E卫星低光传感器的月球校准. 机器人月球天文台模型在放射测量校准中被证明是最准确的,确保可靠的低光远程传感数据.
科学领域:
- 遥感 遥感 遥感 遥感
- 卫星校准 卫星校准
- 天体物理观察天体物理观测
背景情况:
- 云-3E卫星采用中分辨率光谱成像器-低光 (MERSI-LL) 具有新的低光频段 (LLB) 功能.
- 在轨道上对LLB进行放射性校准存在重大挑战.
- 月球是稳定的,用于校准敏感仪器的自然目标.
研究的目的:
- 开发和验证一个基于月球的放射测量校准方法,用于MERSI-LL仪器的LLB.
- 评估机器人月球观测台 (ROLO) 和米勒-特纳2009 (MT2009) 模型对此校准的适用性.
- 为低光远程传感系统提供可靠的校准方法.
主要方法:
- 在2022年至2024年期间,从MERSI-LL收集了十次月球观测.
- 将卫星数据与ROLO和米勒-特纳2009 (MT2009) 月球辐射模型进行比较.
- 修改了MT2009模型,以考虑月球相和太阳光谱变化.
- 通过将MERSI-LL数字数字 (DN) 配合到模拟辐射的模型来导出校准系数.
主要成果:
- 月球辐射显示相角依赖性;ROLO和MT2009模型显示相角>5°的差异为<2%;
- 修改后的MT2009模型提高了与MERSI-LL数据的一致性,特别是对于相角>10°.
- 罗洛模型提供了最合适的 (R2=0.99796),表现优于MT2009 (R2=0.98765) 和修改模型 (R2=0.9876).
结论:
- 与MT2009模型相比,ROLO模型更适合用于低光传感器的轨道放射测量校准.
- 开发的月球校准方法得到了验证,并且适用于其他低光遥感系统.
- 总校准不确定性被确定为大约5.78%.
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