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• 长春光学精密机械与物... [3]
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• OAI收割 [14]
• iSwitch采集 [2]

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• 期刊论文 [12]
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• 2023 [1]
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• Polymer Sc... [1]
• 天文技术与方法 [1]

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浏览/检索结果: 共16条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A Simplified Pointing Model for Alt-Az Telescopes 期刊论文  OAI收割 APPLIED SCIENCES-BASEL, 2023, 卷号: 13, 期号: 20, 页码: 11 作者:  Zhao, Yong;  Wang, Yingqiang;  He, Fei;  Yao, Zhonghua;  Rong, Zhaojin   |  收藏  |  浏览/下载：9/0  |  提交时间：2023/12/27 pointing models  alt-az telescope  mounts   Synthesis and photovoltaic properties of 2D-conjugated polymers with alkylsilyl-substituted thieno[3,2-b]thiophene conjugated side chains 期刊论文  OAI收割 ORGANIC ELECTRONICS, 2018, 卷号: 57, 页码: 255-262 作者:  Yan, Tinghai;  Bin, Haijun;  Sun, Chenkai;  Zhang, Zhi-Guo;  Li, Yongfang   |  收藏  |  浏览/下载：42/0  |  提交时间：2019/04/09 Polymer Solar Cells  Conjugated Polymer Donor Materials  Bdtt-alt-fbta Copolymers  Thieno[3  2-b]Thiophene Conjugated Side Chains   Using Allan Variance Based Semi-Parameter Model to Calibrate Pointing Errors of Alt-az Telescopes 期刊论文  OAI收割 APPLIED SCIENCES-BASEL, 2018, 卷号: 8, 期号: 4, 页码: 614 作者:  Lingjie Yan;  Yongmei Huang;  Yahui Zhang   |  收藏  |  浏览/下载：34/0  |  提交时间：2019/08/23 alt-az telescopes  LOS  pointing errors  nonlinear error  mount model  Allan variance  Allan variance based semi-parameter model   Modeling and calibration of pointing errors with alt-az telescope 期刊论文  OAI收割 NEW ASTRONOMY, 2016, 卷号: 47, 页码: 105-110 作者:  Huang, Long;  Ma, Wenli;  Huang, Jinlong 收藏  |  浏览/下载：24/0  |  提交时间：2016/10/27 Pointing error  Alt-az telescope  Error analysis  SPRM   Recent changes in the active layer thickness across the northern hemisphere 期刊论文  iSwitch采集 ENVIRONMENTAL EARTH SCIENCES, 2016, 卷号: 75, 期号: 7, 页码: 15 作者:  Luo, Dongliang;  Wu, Qingbai 收藏  |  浏览/下载：59/0  |  提交时间：2019/10/09 Circumpolar active layer monitoring (CALM) program  Active layer thickness (ALT)  Northern hemisphere  Cryosphere and climate change  Spatiotemporal variations   伽利略E5频段信号及其性能研究 期刊论文  OAI收割 时间频率学报, 2016, 卷号: 39, 期号: 1, 页码: 25-32 作者:  闫温合;  何在民;  胡永辉   |  收藏  |  浏览/下载：15/0  |  提交时间：2017/11/28 伽利略e5信号  Alt Boc(交替二进制偏移载波)  功率谱密度  码跟踪精度   Betaine homocysteine methyltransferase (BHMT) as a specific and sensitive blood marker for acute liver injury 期刊论文  OAI收割 BIOMARKERS, 2014, 卷号: 19, 期号: 7, 页码: 578—584 Ma, HL; Ning, J; Jin, X; Mao, CM; Bu, XL; Wang, M; Liu, H; Wang, K; Lausted, C; Hood, L; Chen, JK; Hu, ZY 收藏  |  浏览/下载：61/0  |  提交时间：2015/03/13 ALANINE AMINOTRANSFERASE  METHIONINE METABOLISM  S-METHYLTRANSFERASE  SERUM  DISEASE  ELISA  ALT  HEPATOTOXICITY  VALIDATION  EXPRESSION   Uniform to accelerated crystal twisting transition in deuterate polyethylene/poly(ethylene-alt-propylene) blend films 期刊论文  OAI收割 CHINESE JOURNAL OF POLYMER SCIENCE, 2014, 卷号: 32, 期号: 9, 页码: 1260-1270 作者:  Zhang, LN;  Shi, WC;  Han, CC;  Cheng, H;程贺 收藏  |  浏览/下载：38/0  |  提交时间：2016/04/08 Polyethylene/poly(ethylene-alt-propylene) (d-PE/PEP) blend  Phase separation  Crystallization   Study on the azimuth bearing scheme of a large Alt-azimuth telescope (EI CONFERENCE) 会议论文  OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China 作者:  Wang H.;  Dai S.;  Zhang J.;  Wang H.;  Zhang J. 收藏  |  浏览/下载：39/0  |  提交时间：2013/03/25 The azimuth bearing schemes in typical large Alt-azimuth telescopes  especially the 3.5-m APO telescope and the 4.1-m SOAR telescope were analyzed. A scheme of high-angular contacted thrust ball bearing integrated with a radial ball bearing was put forward. According to the Hertz contact theory  the corresponding parameters were designed for engineering application. The static performance parameters  within the range of 60 85 original contact angle were calculated. Compared with the traditional plane thrust ball bearing  the results shows that the high-angular (80) contact thrust ball bearing has more benefits at bearing strength and rigidity for large telescope. The 1500mm diameter prototyping bearing shows good performance  including the axial jitter is 0.009mm  the radial jitter is 0.006mm  the maximum starting torque without load is 30N·m  and the load capacity is more than 30t  which offers advanced technique path for the buildup of the high precision azimuth shafting and the whole telescope system. 2010 Copyright SPIE - The International Society for Optical Engineering.   Orientation error analysis of alt-alt photoelectric telescope (EI CONFERENCE) 会议论文  OAI收割 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, November 19, 2008 - November 21, 2008, Chengdu, China 作者:  Wu X.-X. 收藏  |  浏览/下载：31/0  |  提交时间：2013/03/25 In order to ascertain the effects of main errors of alt-alt photoelectric telescope on measurement accuracy  orientation error is analyzed.For analyzing optical  mechanical and electrical errors from measured target to telescope picture  we construct 7 coordinates such as:the earth's core coordinate  alt-alt coordinate  etc.  carry through 21 times coordinate transformation  form measuring equation with 26 variables. and we utilize Monte Carlo method to calculate the orientation error  analyze the effects of errors upon pointing. The result indicates that the measuring error standard deviation of alt-alt telescope is minimum value about 10? at the zenith zone. and the deviation increases with the rotation angles of longitude and latitude axes. The model and the method not only can analyze and synthesize the main errors  but also provide a reference to the whole design. 2009 SPIE.