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hello1225

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[交流] 帮忙查EIi检索号

麻烦帮查两篇EI检索号，急用，谢谢！
1. WU Ji-li,ZHAO Shang-hong,LI Yong-jun，“Capacity Dimensioning for LEO-Mesh Optical Satellite Network”。
2. Wu Jili，Zhao Shanghong，Li Yongjun，“Quantum Limits of Far-Field Beam Pointing Accuracy in Space”。
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1楼 2011-03-31 18:53:30
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hello1225(金币+10): 非常感谢 2011-03-31 19:07:37
1. Accession number:  20111113746510

Title:  Capacity dimensioning for LEO-mesh optical satellite network

Authors:  Wu, Ji-Li1 ; Zhao, Shang-Hong1 ; Li, Yong-Jun1 ; Zhu, Zi-Hang1 ; Li, Yun-Xia1 ; Yi, Peng1  

Author affiliation:  1  Department of Network Engineering, The Telecommunication School of AFEU, Xi'an, Shaanxi 710077, China


Corresponding author:  Wu, J.-L. (wujili926@126.com)  

Source title:  Tien Tzu Hsueh Pao/Acta Electronica Sinica

Abbreviated source title:  Tien Tzu Hsueh Pao

Volume:  38

Issue:  12

Issue date:  December 2010

Publication year:  2010

Pages:  2713-2717

Language:  Chinese

ISSN:  03722112

CODEN:  TTHPAG

Document type:  Journal article (JA)

Publisher:  Chinese Institute of Electronics, P.O. Box 165, Beijing, 100036, China

Abstract:  The data-rates of transit ports and access ports in the homogeneous Mesh network consisting of low earth orbit (LEO) satellites were deduced based on the symmetrical characteristic of the network topology. According to the traffic, the capacities of the ports were optimized by the Lagrange multiplier method to minimize the packet lost ratio. In the network constituted by m orbit-planes with n satellites each, the capacities of intra-orbit ports should be inversely proportion to the orbit number m, approximately n/8 times of accessing data rates. The capacities of inter-orbit ports should be inversely proportion to the satellite number n in each orbit, approximately m/8 times of accessing date rates. Before optimization, the packet lost ratio was minimum when m=n. After optimization, the packet lost ratio is reduced and keeps decreasing as the total number of satellites increases.

Number of references:  19

Main heading:  MESH networking

Controlled terms:  Computer simulation  -  Electric network topology  -  Lagrange multipliers  -  Optimization  -  Orbits  -  Satellites

Uncontrolled terms:  Capacity dimensioning  -  Lagrange function  -  Mesh network  -  Network simulation  -  Optical satellites

Classification code:  655.2 Satellites  -  703.1 Electric Networks  -  722 Computer Systems and Equipment  -  723.5 Computer Applications  -  921 Mathematics  -  921.5 Optimization Techniques

Database:  Compendex

   Compilation and indexing terms, © 2011 Elsevier Inc.

2.Accession number:  20111213768066

Title:  Quantum limits of far-field beam pointing accuracy in space

Authors:  Wu, Jili1 ; Zhao, Shanghong1 ; Li, Yongjun1 ; Chu, Xingchun1 ; Li, Qin2 ; Zhu, Zihang1 ; Shi, Lei1  

Author affiliation:  1  Institute of Telecommunication School, Air Force Engineering University, Xi'an, Shaanxi 710077, China

2  Air Force Telecommunication and Navigation Institute, Beijing 100085, China


Corresponding author:  Wu, J. (wujili926@126.com)  

Source title:  Guangxue Xuebao/Acta Optica Sinica

Abbreviated source title:  Guangxue Xuebao

Volume:  31

Issue:  1

Issue date:  January 2011

Publication year:  2011

Article number:  0106004

Language:  Chinese

ISSN:  02532239

CODEN:  GUXUDC

Document type:  Journal article (JA)

Publisher:  Chinese Optical Society, P.O. Box 80, Xi'an, 710068, China

Abstract:  Based on the equality of Helmholtz equation and stationary state Schro¨dinger equation, focalizing plane wave is just the transformation of state function of a photonic from coordinate representation to momentum representation. However, as a result of limited aperture size, the state function in the momentum space could not be reconstructed exactly, which leads to the quantum precision limits of alignment. Under the conditions of quantum limits, the precision is approximately 26% of the diffraction limited angle. It depends on the aperture size only and is irrespective to the focal length. The centroid method on the focal plane could only reach the precision close to the diffraction limited angle. The root mean square of remained errors is still 3.24 times of the quantum limits.

Number of references:  22

Main heading:  Quantum theory

Controlled terms:  Communication channels (information theory)  -  Cramer-Rao bounds  -  Diffraction  -  Equations of state  -  Helmholtz equation  -  Optical communication  -  Quantum communication

Uncontrolled terms:  Aperture sizes  -  Beam pointing  -  Centroid method  -  Coordinate representations  -  Diffraction limited  -  Dinger equation  -  Direction of beam arrival  -  Far-field  -  Focal lengths  -  Focal Plane   -  Helmholts equation  -  Limited aperture  -  Momentum spaces  -  Plane wave  -  Precision limits  -  Quantum limit  -  Quantum limits  -  Root Mean Square  -  State functions  -  Stationary state

Classification code:  711.1 Electromagnetic Waves in Different Media  -  716 Telecommunication; Radar, Radio and Television  -  716.1 Information Theory and Signal Processing  -  717.1 Optical Communication Systems  -  921 Mathematics  -  931.4 Quantum Theory; Quantum Mechanics

DOI:  10.3788/AOS201131.0106004

Database:  Compendex

   Compilation and indexing terms, © 2011 Elsevier Inc.
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