| 成像光谱反射率反演中观测角影响的分析 |
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| 引用本文： | 杨本永,方勇华,孙桂玲. 成像光谱反射率反演中观测角影响的分析[J]. 量子电子学报, 2005, 22(4): 667-672 |
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| 作者姓名： | 杨本永 方勇华 孙桂玲 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所,安徽,合肥,230031;中国科学院安徽光学精密机械研究所,安徽,合肥,230031;中国科学院安徽光学精密机械研究所,安徽,合肥,230031 |
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| 基金项目： | 本文在完成过程中,与朱永豪、杨世植、易维宁三位研究员进行了有益探讨,得到了他们的悉心指导,在此表示诚挚感谢. |
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| 摘 要： | 针对OMIS I机载成像光谱数据,通过6S辐射传输码模拟计算和相应理论分析,讨论了观测角变化对传感器入瞳处辐射亮度的影响和由此引起的反射率反演误差.结果表明:在太阳反射波段,观测角的影响有很强的波段特性,大气散射作用较强的短波长波段与大气气体强吸收波段是这种影响的敏感波段;地面目标亮度不同,这种影响也是不同的,对低反射率目标影响较大,而对高反射率目标影响甚微;另外遥感器飞行高度也是决定这种影响情况的重要因素.
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| 关 键 词： | 遥感 成像光谱数据 模拟计算 观测天顶角 反射率反演 |
| 文章编号： | 1007-5461（2005）04-0667-06 |
| 收稿时间： | 2004-05-18 |
| 修稿时间： | 2004-05-18 |
Zenith observation angle correction in retrieval of surface reflectance basic theory and simulation |
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| YANG Ben-yong,FANG Yong-hua,SUN Gui-ling. Zenith observation angle correction in retrieval of surface reflectance basic theory and simulation[J]. Chinese Journal of Quantum Electronics, 2005, 22(4): 667-672 |
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| Authors: | YANG Ben-yong FANG Yong-hua SUN Gui-ling |
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| Abstract: | Based on the high resolution imaging spectrometer data of OMIS I we performed a simulative calculation from 6S. Relation between radiance at satellite level and variety of zenith observation angle was discussed and correlative error in the retrieve of surface reflectance was analyzed, simultaneously. The results show that there are spectral properties about this effect, it is sensitive in the strong scattering regions and the major absorption channels by atmosphere; On the other hand, the brightness of targets and the flight elevation decides this effect. Based on this analysis a primary correction strategy was given. |
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| Keywords: | remote sensing imaging spectrometer data simulation zenith observation angle retrieval of surface reflectance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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