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浏览/检索结果: 共20条，第1-10条 帮助

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Localizability With Range-Difference Measurements: Numerical Computation and Error Bound Analysis 期刊论文  OAI收割
IEEE-ACM TRANSACTIONS ON NETWORKING, 2022, 页码: 14
作者:  Zeng, Guangyang;  Mu, Biqiang;  Wei, Jieqiang;  Wong, Wing Shing;  Wu, Junfeng
  |  收藏  |  浏览/下载：44/0  |  提交时间：2022/06/21
Research on the propagation mechanism of the arrival time error and wave velocity error under sensor array 期刊论文  OAI收割
IOP Conference Series: Earth and Environmental Science, 2021, 卷号: 861, 期号: 5
作者:  Li,Tao;  Chen,Bingrui;  Zhu,Xinhao
  |  收藏  |  浏览/下载：37/0  |  提交时间：2022/01/05
Real-time BDS signal-in-space anomaly detection method considering receiver anomalies 期刊论文  OAI收割
IET RADAR SONAR AND NAVIGATION, 2019, 卷号: 13, 期号: 12, 页码: 2220-2229
作者:  Fan, Lihong;  Tu, Rui;  Zhang, Rui;  Zheng, Zengji;  Liu, Jinhai
  |  收藏  |  浏览/下载：33/0  |  提交时间：2021/11/29
Ground-Target Geo-Location Method Based on Extended Kalman Filtering for Small-Scale Airborne Electro-Optical Platform 期刊论文  OAI收割
Guangxue Xuebao/Acta Optica Sinica, 2019, 卷号: 39, 期号: 5
作者:  S.Mu;  C.Qiao
  |  收藏  |  浏览/下载：52/0  |  提交时间：2020/08/24
Gravity compensation optimization algorithm for large aperture spatial optical telescope 期刊论文  OAI收割
Guangxue Jingmi Gongcheng/Optics and Precision Engineering, 2018, 卷号: 26, 期号: 11, 页码: 2764-2775
作者:  He, Xu;  Yang, Xue;  Li, Yi;  Zhang, Xiao-Hui
  |  收藏  |  浏览/下载：13/0  |  提交时间：2019/09/17
Error bound analysis of indoor wi-fi location fingerprint based positioning for intelligent access point optimization via fisher information 期刊论文  iSwitch采集
Computer communications, 2016, 卷号: 86, 页码: 57-74
作者:  Zhou, Mu;  Qiu, Feng;  Xu, Kunjie;  Tian, Zengshan;  Wu, Haibo
收藏  |  浏览/下载：50/0  |  提交时间：2019/05/09
Experimental study on location accuracy of a 3D VHF lightning-radiation-source locating network 期刊论文  iSwitch采集
SCIENCE CHINA-EARTH SCIENCES, 2015, 卷号: 58, 期号: 11, 页码: 2034-2048
作者:  Zhang GuangShu;  Li YaJun;  Wang YanHui;  Zhang Tong
收藏  |  浏览/下载：46/0  |  提交时间：2019/10/09
Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
作者:  Li Z.;  Li Z.
收藏  |  浏览/下载：43/0  |  提交时间：2013/03/25
Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness  strength and thermal dimensional stability  some factors such as support scheme  materials selection  lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge  influences of gravity  assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively  the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz  which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications  Switzerland.  
Centroid localization algorithm based on bicubic interpolation gray square weighted (EI CONFERENCE) 会议论文  OAI收割
2012 3rd International Conference on Advances in Materials and Manufacturing Processes, ICAMMP 2012, December 22, 2012 - December 23, 2012, Beihai, China
作者:  Zhou J.
收藏  |  浏览/下载：152/0  |  提交时间：2013/03/25
The 3D coordinates of measured point is embodied in 2D image coordinate of the optical characteristic point via the visual measurement system. Based on the gray square weighted centroid localization algorithm  the paper presents bicubic interpolation gray square weighted centroid localization algorithm  increases the number of effective pixels around the optical characteristic point imaging center  and reduces noise error via the gray square weighted  improves the imaging center location accuracy of optical characteristic point  realizes the accurate location of the optical characteristic points. Results indicate application of the proposed algorithm to location  the standard tolerance along the direction of x is 0.0022 Pixel  the standard tolerance along the direction of y is 0.0023 Pixel  compared with the others  the standard tolerance is minimum and discrete to a lesser degree distancing ideal image point  that is  the proposed algorithm has higher location accuracy. The maximum tolerance along the direction of x is 0.008 Pixel  the one along the direction of y is 0.007 Pixel  compared with the other two algorithms  the maximum tolerance is minimum.Results indicate that the stability of the proposed algorithm is better. (2013) Trans Tech Publications  Switzerland.  
A robust estimator for the accuracy assessment of remote-sensing-derived DEMs SCI/SSCI论文  OAI收割
2012
Chen C. F.; Fan Z. M.; Yue T. X.; Dai H. L.
收藏  |  浏览/下载：32/0  |  提交时间：2012/09/04