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	Dual-motor de-rotator system of prime focus alt-azimuth telescope with large field of view 期刊论文 OAI收割 Guangxue Jingmi Gongcheng/Optics and Precision Engineering, 2021, 卷号: 29, 期号: 4, 页码: 749-762 作者: Y.-X. Li; S. Wang; J.-L. Wang; H.-W. Li; Y.-Y. Cao and Y. Liu \| 收藏 \| 浏览/下载：2/0 \| 提交时间：2022/06/13
	Center Extraction Method for Star-Map Targets Based on Anisotropic Gaussian Surface Fitting 期刊论文 OAI收割 Guangxue Xuebao/Acta Optica Sinica, 2017, 卷号: 37, 期号: 5 作者: Wang, M.; J. Zhao and T. Chen \| 收藏 \| 浏览/下载：15/0 \| 提交时间：2018/06/13
	月球辐射基准源地基观测系统的研究学位论文 OAI收割硕士: 中国科学院大学, 2015 作者: 崔涌波收藏 \| 浏览/下载：36/0 \| 提交时间：2016/04/11 遥感赤道仪对月观测 BP网络 PID算法
	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：15/0 \| 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.