狭缝匀光器对遥感光谱仪探测精度的研究

IF 1.6 4区物理与天体物理 Q3 OPTICS 光学学报 Pub Date : 2023-01-01 DOI:10.3788/aos222099

郭宝泽 Guo Baoze, 石恩涛 Shi Entao, 王咏梅 Wang Yongmei, 武志昆 Wu Zhikun

引用次数: 0

Abstract

对星载仪器的回传数据进行分析，发现空间场景不均匀现象会造成光谱响应函数（ISRF）的“漂移”，从而影响探测数据精度。提出通过光学元件平衡了ISRF“漂移”的问题——狭缝匀光器。概述了光线在狭缝匀光器中的传播过程，建立了合理的光学模型，利用近场衍射原理解释其传播过程并分析了狭缝匀光器的光学特性。整个狭缝模型由数学软件和光学软件进行仿真模拟及数理分析，得到狭缝匀光器匀光效果的具象表示。通过光学模型表示了入瞳场景与狭缝匀光器匀光效果之间关联，研究不同入瞳场景中痕量气体排放点位置和覆盖面积的不同对狭缝匀光器提升探测精度的影响，量化了不同入瞳场景下光谱仪系统ISRF的变化，并提出一种提高探测精度的方法。

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狭缝匀光器对遥感光谱仪探测精度的研究

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来源期刊

光学学报光学

CiteScore

2.80

自引率

37.50%

发文量

16537

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