Day/night whole sky imagers for 24-h cloud and sky assessment: history and overview
نویسندگان
چکیده
منابع مشابه
Whole Sky Imagers For Real-Time Cloud Assessment, Cloud Free Line of Sight Determinations and Potential Tactical Applications
Whole Sky Imagers (WSI) have been developed at the Marine Physical Lab for several military and research applications over many years. This paper discusses several systems useful for real-time monitoring of cloud conditions and radiance distribution, and for tactical applications. We include a discussion of several data products, including the results of a Cloud Free Line of Sight (CFLOS) stati...
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Automatic cloud classification of whole sky images A. Heinle, A. Macke, and A. Srivastav Excellence Cluster “The Future Ocean”, Department of Computer Science, Kiel University, Kiel, Germany Leibniz Institute of Marine Sciences at Kiel University (IFM-GEOMAR), Kiel, Germany Received: 21 October 2009 – Accepted: 22 December 2009 – Published: 27 January 2010 Correspondence to: A. Heinle (ahe@info...
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In observing the cloudless sky, one can often notice that the area near the sun is whiter and brighter than the rest of the hemisphere. Additionally, even a slight haze will make a large angular area of the horizon whiter and brighter when the sun is low on the horizon. The human eye has an amazing ability to handle a range of light intensity spanning orders of magnitude. But one of the persist...
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The scientific productivity of laser guide star adaptive optics systems strongly depends on the sky coverage, which describes the probability of finding natural guide stars for the tip/tilt wavefront sensor(s) to achieve a certain performance. Knowledge of the sky coverage is also important for astronomers planning their observations. In this paper, we present an efficient method to compute the...
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این پایان نامه بدنبال بررسی کاربرد ارزیابی مستمر در یک محیط یادگیری زبان دوم از طریق طرح چهار سوال تحقیق زیر بود: (1) درک توانایی های فراگیران زمانیکه که از طریق برآورد عملکرد مستقل آنها امکان پذیر نباشد اما در طول جلسات ارزیابی مستمر مشخص شوند; (2) امکان تقویت توانایی های فراگیران از طریق ارزیابی مستمر; (3) سودمندی ارزیابی مستمر در هدایت آموزش فردی به سمتی که به منطقه ی تقریبی رشد افراد حساس ا...
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ژورنال
عنوان ژورنال: Applied Optics
سال: 2013
ISSN: 1559-128X,2155-3165
DOI: 10.1364/ao.52.001605