天空背景光学辐射特性测量

路大举; 杨锐; 张波; 郑捷; 邹凯; 冷杰; 万敏

天空背景光学辐射特性测量

路大举^1,2, ,,
杨锐^1,2,
张波^1,2,
郑捷^1,2,
邹凯^1,2,
冷杰^1,2,
万敏^1,2

1.
中国工程物理研究院高能激光科学与技术重点实验室, 四川绵阳 621 900;
2.
中国工程物理研究院应用电子学研究所, 四川绵阳 621 900;
3.
海装驻重庆地区军事代表局, 四川绵阳 621 900

详细信息

通讯作者:
路大举

计量
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- 被引次数: 0
出版历程
- 收稿日期: 2013-01-30
- 修回日期: 2013-02-25
- 刊出日期: 2013-05-15

Measurement of sky background luminance characteristics

Lu Daju^{1,2
, ,},
Yang Rui^1,2,
Zhang Bo^1,2,
Zheng Jie^1,2,
Zou Kai^1,2,
Leng Jie^1,2,
Wan Min^1,2

1.
Key Laboratory of Science and Technology on High Energy Laser,CAEP,P.O.Box 919-1012,Mianyang 621900,China;
2.
Institute of Applied Electronics,CAEP,P.O.Box 919-1001,Mianyang 621900,China;
3.
Military Representative Office of Naval Equipment Department in Chongqing,P.O.Box 919-811-3,Mianyang 621900,China

摘要

摘要: 光学成像和光信息空间传输等领域需要对天空背景特性进行定性或定量的研究。Modtran等模拟计算方法无法有效模拟复杂多样的气候条件和地理环境。建立专门的测量装置获取天空背景光谱特性参数,与理论模型计算结果进行了比对,分析了两者的一致性和差别。通过观测数据得出：在天空比较均匀的环境中,天空光谱亮度通常随着太阳角的增大而减小,当观测方向接近地平面时（大约同地平面夹角小于30）,天空亮度随着太阳角的增大而增大；在晴朗无云的天空中,光谱亮度分布偏蓝,天空亮度主要集中在短波段部分；在阴天和有云天观测到的天空亮度光谱明显红移。
- 天空背景 /
- 光信息空间传输 /
- 辐射特性测量 /
- 目标探测
Abstract: Sky background luminance is very important in imaging and optical information transition in space. The existing sky luminance simulation codes, such as Modtran cant be suitable for different climate and global location. Therefore, we developed a sky luminance measurement device and obtained a lot of experimental data. By analyzing these data, we found that in homogeneous sky background, the sky spectral luminance decreases with the increase of solar angle in general, but when the angle between observation direction and ground plane is less than 30, the luminance increases with the decreasing solar angle. In fine and cloudless sky background, the sky luminance is concentrated at short-wave band, while in cloudy background there is obvious redshift of the luminance spectrum.
- sky background /
- spatial optical information transition /
- measurement of luminance characteristics /
- target detection