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在载入极轨卫星的光谱成像仪中对流浪光污染的分析和抑制设计
Shuaishuai Chen1,2,3, Xinhua Niu1,2
1Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.
Sensors (Basel, Switzerland)
|September 9, 2023
概括
散光对光学仪器有很大的影响. 这项研究开发了一种用于北极轨道光谱成像仪的新方法,减少流浪光的十倍,以改善成像和数据准确性.
科学领域:
- 光学工程是指光学工程.
- 遥感技术 遥感技术 遥感技术
- 频谱学是一种光谱学.
背景情况:
- 迷路光,光学系统中的非成像光,降低图像质量和数据量化.
- 在太阳同步轨道上的FY-3D中分辨率光谱成像仪 (MERSI) 具有广的视野,需要减轻流浪光线.
研究的目的:
- 为像MERSI这样的极地轨道光谱仪构建一个散光辐射模型.
- 提出设计要求,以有效地抑制散光.
- 开发一种全面的方法来分析和验证散光减少.
主要方法:
- 开发了一种适用于极轨谱仪的散光辐射模型.
- 采用点源透射率 (PST) 作为散光分析的关键指标.
- 利用系统模拟和物理测试来验证散光抑制的有效性.
主要成果:
- 提出了一种整合建模,模拟和测试的全链方法.
- 偏光抑制设计的优化导致系统PST的最大减少十倍.
- 实施的散光消除措施的有效性经过实验验证.
结论:
- 拟议的方法为极地轨道光谱成像仪中散光抑制提供了可通用的方法.
- 在散光减少方面取得了显著的改进,提高了MERSI的成像能力.
- 这项工作为设计未来的光谱成像仪器提供了强大的框架,减少了流浪光干扰.
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