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长春光学精密机械与... [10]
西安交通大学 [4]
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会议论文 [25]
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Research on the Fault Location Method of Double-terminal MMC-HVDC Transmission Line without the Influence of Wave Velocity
会议论文
Beijing, China, June 21, 2020 - June 22, 2020
作者:
Zhang, Mingguang
;
Yang, Chengming
;
Liu, Zilin
;
Chang, Jianhua
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2020/12/18
Acoustic wave velocity
Electric lines
Location
MATLAB
Wave propagation
Wavelet transformsGrid connections
HVDC transmission lines
HVDC transmission system
Positioning accuracy
Traveling wave fault locations
Traveling wave locations
Traveling-wave velocity
Voltage traveling waves
A Turbulence Image Restoration Algorithm for Subpixel Position of Location Holes on Nuclear Fuel Assemblies
会议论文
OPTICAL METROLOGY AND INSPECTION FOR INDUSTRIAL APPLICATIONS V, 2018-01-01
作者:
Chen, Wenjun[1]
;
Zheng, Zheng[2]
;
Zhang, Zhen[3]
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2019/04/22
turbulence image restoration
image registration
image patch
location holes
nuclear fuel assembly
subpixel accuracy
A novel PDR aided UWB indoor positioning method
会议论文
Proceedings of 5th IEEE Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Services, UPINLBS 2018
作者:
Xia, M.
;
Xiu, C.
;
Yang, D.
;
Wang, L.
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  |  
浏览/下载:12/0
  |  
提交时间:2019/12/30
Broadband networks
Extrapolation
Indoor positioning systems
Location based services
Navigation
Telecommunication services
Accuracy Factor
Extended extrapolation
Indoor positioning
Indoor positioning methods
Multipath resolution
Non-line-of-sight
Pedestrian dead reckoning (PDR)
Pedestrian dead reckonings
Ultra-wideband (UWB)
Adaptive genetic algorithm-based method for antenna location optimization in RF relative measurement
会议论文
2018 NASA/ESA Conference on Adaptive Hardware and Systems, AHS 2018
作者:
Zijie, W.
;
Rongke, L.
;
Weiqing, M.
;
Xiaoyan, S.
;
Thompson, J.
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  |  
浏览/下载:3/0
  |  
提交时间:2019/12/30
Genetic algorithms
Location
NASA
Spacecraft
Spacecraft propulsion
Adaptive genetic algorithms
Antenna location optimizations
Antenna locations
Function optimization problems
Measurement accuracy
Relative measurement
Relative position and attitude
Spacecraft formation flying
Antennas
Database Search Algorithm Based on Track Predicting in Fingerprinting Localization
会议论文
INTELLIGENCE SCIENCE AND BIG DATA ENGINEERING, ISCIDE 2017, 2017-01-01
作者:
Zou, Deyue
;
Guo, Yuqun
;
Liu, Xin
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  |  
浏览/下载:7/0
  |  
提交时间:2019/12/03
Fingerprint location algorithm
Positioning accuracy
Clustering
priori information
An Improved Kalman Filtering Method for Indoor Location
会议论文
2016 2nd IEEE International Conference on Computer and Communications (ICCC 2016), Chengdu, China, October 14-17, 2016
作者:
Guo TT(郭廷廷)
;
Liu MZ(刘明哲)
;
Qiao F(乔枫)
;
Xu AD(徐皑冬)
;
Liu QN(刘秦宁)
收藏
  |  
浏览/下载:39/0
  |  
提交时间:2016/12/21
indoor location
non-line of sight (NLOS)
location algorithm
Kalman filtering
location accuracy
Signal-in-Space Accuracy Research of GPS/BDS in China Region
会议论文
7th China Satellite Navigation Conference (CSNC), Changsha, PEOPLES R CHINA, 2016-01-01
作者:
Sun, Si
;
Wang, Zhipeng
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  |  
浏览/下载:3/0
  |  
提交时间:2019/12/30
Signal-In-Space Accuracy
Signal-In-Space Range Error
Worst User Location
Geometric Approximation Algorithm
The research of DV-HOP positioning algorithm based on RSSI calibration
会议论文
Changsha, China, April 18, 2014 - April 20, 2014
作者:
Cao, Jie
;
Chen, Mu
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  |  
浏览/下载:20/0
  |  
提交时间:2020/11/15
Intelligent systems
Tracking (position)
Wireless sensor networks
Distance measuring error
DV-Hop
Hybrid positioning
Location algorithms
Positioning accuracy
Positioning algorithms
Positioning error
RSSI
Structural design of primary mirror subassembly for space telescope (EI CONFERENCE)
会议论文
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
Xu H.
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  |  
浏览/下载:43/0
  |  
提交时间:2013/03/25
In order to design a large aperture primary mirror with the diameter of 1150 mm
the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail
including material selection
diameter-thickness ratio
the number of the support points
location selection and lightweight structure
etc. A novel space mirror structure system was put forward
and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications
Switzerland.
Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE)
会议论文
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
Li Z.
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  |  
浏览/下载:27/0
  |  
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.
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