中国科学院机构知识库网格系统: 检索

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	AX UMa, an ab-type RR Lyrae Star with a Rapidly Decreasing Pulsation Period, and Its Binarity 期刊论文 OAI收割 The Astronomical Journal, 2021, 卷号: 161, 期号: 4, 页码: 14 作者: Li LJ(李临甲); Qian SB(钱声帮); Zhu LY(朱俐颖); He JJ(何家佳); Fang, X.-H. \| 收藏 \| 浏览/下载：78/0 \| 提交时间：2021/04/19 Sky surveys RR Lyrae variable stars Binary stars CCD observation
	Optical Variability of the TeV Blazar 1ES 0806+524 on Diverse Timescales 期刊论文 OAI收割 The Astrophysical Journal, 2020, 卷号: 890, 期号: 1 作者: Pandey,Ashwani; Gupta,Alok C.; Kurtanidze,Sofia O.; Wiita,Paul J.; Damljanovic,G. \| 收藏 \| 浏览/下载：70/0 \| 提交时间：2021/09/26 Active galactic nuclei Blazars Observational astronomy CCD photometry Radio loud quasars Active galaxies Optical observation Relativistic jets Optical telescopes BL Lacertae objects
	A Processing Method for Low SNR Repetitive Observation Spectrum 期刊论文 OAI收割 SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 卷号: 38, 期号: 7, 页码: 2311-2314 作者: Liu Yuan-yuan; Chen Jian-jun; Qiu Bo; Fan Xiao-dong; Wei Shi-ya \| 收藏 \| 浏览/下载：37/0 \| 提交时间：2020/03/10 Repetitive observation spectrum Low SNR CCD noise sources Candidate for binary star
	Design of a CDS ASIC for Multireadout X-Ray CCDs With a 0.032% INL 期刊论文 OAI收割 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2018, 卷号: 65, 期号: 6, 页码: 1307-1314 作者: Lu B(陆波); Lu, B; Chen, Y; Chen Y(陈勇) \| 收藏 \| 浏览/下载：96/0 \| 提交时间：2019/09/24 Application specific integrated circuit (ASIC) correlated double sampling (CDS) integral nonlinearity (INL) timing observation X-ray charge-coupled device (CCD)
	Development of low readout noise scientific CCD camera for lunar astronomical observation 会议论文 OAI收割 international symposium on photoelectronic detection and imaging 2011: space exploration technologies and applications, beijing, china, may 24, 2011 - may 26, 2011 作者: WangHong 收藏 \| 浏览/下载：45/0 \| 提交时间：2012/07/09 Scientific CCD camera Lunar astronomical observation Readout noise System gain
	Modeling of satellite borne TDI CCD pitching imaging image motion velocity vector (EI CONFERENCE) 会议论文 OAI收割 2009 IEEE International Conference on Automation and Logistics, ICAL 2009, August 5, 2009 - August 7, 2009, Shenyang, China 作者: Zhang L.; Li S.; Zhang L. 收藏 \| 浏览/下载：36/0 \| 提交时间：2013/03/25 In order to obtain three-dimensional observation effect with single satellite borne time delay and integrate charge coupled device (TDI-CCD) pitching imaging is required. More accurate real-time image motion velocity vector computational model of space camera is also necessary to make the imaging perfect. Imaging motion velocity vector computation model must be set up on image plane at pitching imaging. According to the geometric relationship between the pitching imaging space camera and the Earth's rotation motion satellite borne TDI CCD pitching imaging motion velocity vector model is derived by mapping the ground speed to the image plane and using coordinate transformation method. The numerical simulation results show that the image velocity model can reduce deviation angle error about 33' and about 30% image motion speed error compared to traditional ground velocity model. 2009 IEEE.
	Application of CMOS APS star tracker with large FOV in attitude and angular velocity determination (EI CONFERENCE) 会议论文 OAI收割 Advanced Sensor Systems and Applications III, November 12, 2007 - November 14, 2007, Beijing, China Lu D.; Guang J.; Shaoju W.; Tao C. 收藏 \| 浏览/下载：49/0 \| 提交时间：2013/03/25 The paper deals with the spacecraft attitude determination problem using a new kind of star tracker with large FOV based on CMOS APS. Star tracker has been developed since 1970s and proved to be the most accurate sensor ever used in the spacecraft attitude determination systems. But the traditional CCD star tracker also has some disadvantages such as small FOV high power consumption low sample rate and low working angular rate limit which prevent the use of CCD star tracker in attitude large angle maneuvering process. The new kind of star tracker based on CMOS APS has no such disadvantages and is more applicable on modern low-cost agile small satellites. Its higher sample rate and working angular rate limit over traditional CCD star tracker make it more adapt for spacecraft angular velocity determination. Because of the large FOV of the star tracker the mathematical model of traditional CCD star tracker with a small FOV is not appropriate. So a new mathematical model was quoted to fit the star tracker with a large FOV. An alternative adaptive algorithm was also introduced in the paper. It can help the EKF algorithm work lacking of accurate covariance of the observation noise. An optimal estimation algorithm was used to estimate the angular velocity directly from the star tracker measurements. Mathematic simulation results indicate the CMOS APS star tracker can give accurate attitude information and estimated angular rate. The method can be used as the chief attitude determination system design of low-cost satellite without gyros or be used as a backup strategy in the event of gyro failures to enhance the reliability of the attitude determination system.