机构

• 紫金山天文台 [2]
• 长春光学精密机械与物... [1]
• 遥感与数字地球研究所 [1]
• 国家天文台 [1]
• 国家授时中心 [1]

采集方式

• OAI收割 [6]

内容类型

• 期刊论文 [4]
• 会议论文 [2]

发表日期

• 2018 [1]
• 2013 [1]
• 2009 [1]
• 2006 [1]
• 2003 [1]
• 1999 [1]
• 更多

学科主题

• Astronomy ... [2]

筛选

浏览/检索结果: 共6条，第1-6条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Design of a near-infrared sky brightness monitor and field measurement at the Ngari Observatory, Tibet 期刊论文  OAI收割 JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS, 2018, 卷号: 4, 期号: 4, 页码: 13 作者:  Tang, Qi-Jie;  Wang, Jian;  Dong, Shu-Cheng;  Chen, Jin-Ting;  Zhang, Yi-Hao   |  收藏  |  浏览/下载：19/0  |  提交时间：2020/03/10 site testing  infrared sky brightness  InGaAs detector   Atmospheric extinction coefficients and night sky brightness at the Xuyi Observation Station 期刊论文  OAI收割 RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2013, 卷号: 13, 期号: 4, 页码: 490-500 作者:  Zhang, Hui-Hua;  Liu, Xiao-Wei;  Yuan, Hai-Bo;  Zhao, Hai-Bin;  Yao, Jin-Sheng 收藏  |  浏览/下载：33/0  |  提交时间：2014/01/08 techniques: astronomical observing sites  atmospheric extinction coefficients  night sky brightness   The PLATO Dome A Site-Testing Observatory: Instrumentation and First Results 期刊论文  OAI收割 PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2009, 卷号: 121, 期号: 876, 页码: 174-184 作者:  Yang, H.;  Allen, G.;  Ashley, M. C. B.;  Bonner, C. S.;  Bradley, S. 收藏  |  浏览/下载：59/0  |  提交时间：2011/12/08 HIGH-ANTARCTIC PLATEAU  SOUTH-POLE  SKY BRIGHTNESS  ATMOSPHERIC-TURBULENCE  ASTRONOMY  TELESCOPE  ARRAY   An improved two-dimensional entropy method for star trail tracing in deep sky (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Wang Y.-J.;  Yao Z.-J. 收藏  |  浏览/下载：38/0  |  提交时间：2013/03/25 The trace of star trail is an important component of deep sky detection. The stars are low contrast targets  and their self-rotation will make their brightness change in cycle. Above all  the trail trace is vulnerable to the block and disturbance of other stars. Traditional one-dimensional maximum entropy thresholding algorithm is vulnerable to the noise  and the calculation of two-dimensional entropy methods is too large and takes too much time. This paper proposes an improved two-dimensional entropy threshold algorithm. We use recursion iteration method to eliminate the redundancy calculation  and reduce the size of two-dimensional histogram based on the deep sky stars characteristic  such as low contrast  fuzziness and the centralized histogram. We also combine our algorithm with the space trail trace model to forecast the star trace. Experiments results show  when the star are blocked or they turn dark  the method still can well extrapolate the star trace. Our method improves the capability of trailing the ebb and small star  and increases the precision of tracing. It is also robust to the noise  so there is a good application foreground for the method.   Quantitative remote sensing for synthetic aerosol and it's application in Shanghai district 会议论文  OAI收割 Optical Remote Sensing of the Atmosphere and Clouds Iii, Bellingham Deng, RR; Tian, GL; Wuang, XM; Cheng, XX 收藏  |  浏览/下载：12/0  |  提交时间：2014/12/07 air pollution  synthetic aerosol  remote sensing  scattering  SKY BRIGHTNESS MEASUREMENTS  SATELLITE MEASUREMENTS  AIR-POLLUTION   The sky brightness when the rising sun is in eclipse 期刊论文  OAI收割 CHINESE ASTRONOMY AND ASTROPHYSICS, 1999, 卷号: 23, 期号: 2, 页码: 249-257 作者:  Liu, CY;  Zhou, XL   |  收藏  |  浏览/下载：13/0  |  提交时间：2021/11/29 solar eclipse  sky brightness  chronology