云层对近红外白天测星的影响

发布时间：2018-05-20 18:29

本文选题：近红外 + 云层　；参考：《激光与红外》2014年06期

【摘要】：大气层内白天测星最大的困难是过强的天空背景辐射,白天近红外波段可以探测到足够多的星体用以导航。目前已有研究针对理想情况下的白天恒星探测进行了分析,然而,对于实际情况来说,天空背景很难像理想分析中那样无风无雨无云,尤其是云层自身的热辐射及散射的太阳辐射对近红外白天恒星探测造成极大的影响;根据经验公式,对云层和太阳的红外辐射进行计算,分析了白天云层对恒星探测的影响,并以层云和积云为例,具体分析了恒星辐射透过云层的衰减,对实际工作具有一定的指导意义。
[Abstract]:The biggest difficulty in measuring stars in the atmosphere during the day is the strong sky background radiation, and enough stars can be detected in the daytime near infrared band for navigation. At present, studies have been carried out to analyze daytime star detection in ideal conditions. However, it is very difficult for the sky background to be as windy, rainy and cloudless as it is in ideal analysis. In particular, the thermal radiation of the clouds themselves and the scattered solar radiation have a great influence on the detection of stars during the near infrared day. According to the empirical formula, the infrared radiation of the clouds and the sun is calculated, and the influence of the clouds on the detection of stars during the day is analyzed. Taking stratospheric clouds and cumulus clouds as examples, the attenuation of stellar radiation through clouds is analyzed in detail, which has certain guiding significance for practical work.
【作者单位】： 92941部队;海军航空工程学院;92819部队;
【分类号】：P141.91

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