中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共8条,第1-8条 帮助

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Effects of reflector antenna panel installation errors on average power pattern 期刊论文  OAI收割
International Journal of Rf and Microwave Computer-Aided Engineering, 2020, 卷号: 30, 期号: 3, 页码: e22084
作者:  
Lian, Pei Yuan;  Wang, Cong Si;  Xu, Qian;  Xiang, Bin Bin;  Xue, Song
  |  收藏  |  浏览/下载:21/0  |  提交时间:2021/06/25
Influence and optimization of CCOS processing path to surface errors 会议论文  OAI收割
Chengdu, China, June 26, 2018 - June 29, 2018
作者:  
Cai, Faming;  Wan, Yongjian;  Liu, Haitao;  Han, Xiaolei;  Zhang, Rongzhu
  |  收藏  |  浏览/下载:24/0  |  提交时间:2021/05/06
Accuracy analysis and testing for secondary mirror adjusting mechanism in large space telescope 期刊论文  OAI收割
Guangxue Jingmi Gongcheng/Optics and Precision Engineering, 2019, 卷号: 27, 期号: 11, 页码: 2374-2383
作者:  
H.-B.Zhao;  W.-G.Zhao;  J.-H.Dong;  W.-F.Yang;  F.-C.Liu
  |  收藏  |  浏览/下载:17/0  |  提交时间:2020/08/24
Effects of random errors in different rings on reflector's gain and sidelobe levels 会议论文  OAI收割
Guilin, China, October 7, 2015 - October 10, 2015
作者:  
Lian, P. Y.;  Wang, C. S.;  Wang, W.
  |  收藏  |  浏览/下载:29/0  |  提交时间:2017/07/04
Uncertainty analysis of eddy flux measurements in typical ecosystems of ChinaFLUX SCI/SSCI论文  OAI收割
2010
作者:  
Zhang L.;  Zhang L.
收藏  |  浏览/下载:28/0  |  提交时间:2012/06/08
Evaluation of seasonal and spatial variations of lumped water balance model sensitivity to precipitation data errors 期刊论文  OAI收割
JOURNAL OF HYDROLOGY, 2006, 卷号: 324, 期号: 1-4, 页码: 80-93
作者:  
Xu, CY;  Tunemar, L;  Chen, YQD;  Singh, VP
  |  收藏  |  浏览/下载:15/0  |  提交时间:2012/03/08
Error analysis and test study of fiber optic gyroscope north-finder (EI CONFERENCE) 会议论文  OAI收割
Advanced Sensor Systems and Applications II, November 8, 2004 - November 12, 2004, Beijing, China
Zhang Z.; Sun J.; Wu K.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
North-finder system is an important application of the inertial technology. It provides true north azimuth information to f all kinds of ground-based equipment. This paper designed a dynamic automatic north-finder based on the modulation output of fiber optic gyroscope (FOG). In this scheme  the sine output signal of the FOG was sampled and disposed  and then the real north of surveyed point on the surface of earth was calculated. The deviation caused by the base tilt was compensated by an accelerator. The output signals of FOG and accelerator were computed combined with the position sampled from increasing encoder by digital signal processor. Successive rotating technique was adopted to modulate the FOG signal periodically. Most of the low frequency part of random gyro drift errors was compensated. The north-finder accuracy was improved compared with the traditional static measuring method. The test result shows the FOG automatic north-finder obtains 2' true north angle accuracies within not more than three minutes  can meet the orientation need of artillery  terrain measurement vehicle  armored car  unmanned drive vehicle  geodetic survey and tunnel exploration.  
Estimation of average DEM accuracy under linear interpolation considering random error at the nodes of TIN model EI期刊论文  OAI收割
2005
作者:  
Dai Erfu
收藏  |  浏览/下载:19/0  |  提交时间:2012/06/11