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CAS IR Grid
机构
长春光学精密机械与物... [3]
力学研究所 [2]
国家空间科学中心 [1]
采集方式
OAI收割 [6]
内容类型
会议论文 [3]
期刊论文 [3]
发表日期
2016 [1]
2013 [1]
2012 [2]
2011 [1]
2009 [1]
学科主题
Computer S... [1]
流体力学 [1]
流体力学::计算流体... [1]
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Coincidence of heliospheric current sheet and stream interface: Implications for the origin and evolution of the solar wind
期刊论文
OAI收割
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2016, 卷号: 121, 期号: 1, 页码: 19-29
作者:
Huang, Jia
;
Liu, Yong C. -M.
;
Klecker, Berndt
;
Chen, Yao
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2016/04/08
heliospheric current sheet
stream interface
coincidence
true sector boundary
pseudostreamer
interchange reconnection
Parallel computing strategy for a flow solver based on immersed boundary method and discrete stream-function formulation
期刊论文
OAI收割
COMPUTERS & FLUIDS, 2013, 卷号: 88, 页码: 210-224
作者:
Wang SZ(王士召)
;
He GW(何国威)
;
Zhang X(张星)
收藏
  |  
浏览/下载:42/0
  |  
提交时间:2013/10/14
Parallelization
Domain decomposition
Massage passing interface
Immersed boundary method
Discrete stream-function formulation
Communication synchronization in wireless optical link (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China
作者:
Guo J.
;
Guo J.
;
Wang H.
;
Wang H.
;
Wang H.
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  |  
浏览/下载:30/0
  |  
提交时间:2013/03/25
An FPGA based transceiving synchronization method is demonstrated for Free Space Optical (FSO) communication system
which is discussed separately as the transmitting protocol and the receiving protocol. During the discussion of these two parts
the co-operation of them is also discussed. The transmitting protocol interfaces the outer input data with a parallel port
buffers the input data
encodes the input data stream
serializes the parallel data and outputs the serialized data. It also has an output management unit to manage the activity of each part of the transmitting protocol. The receiving protocol filters and synchronizes the input serial data stream
parallels the serial data stream
decodes the input data
checks received error
handles transmission exception and interfaces the outer receiver with a parallel port. The entire transceiving protocol could be programmed into a single FPGA chip to improve system integrity and reduce the system cost. The presented protocol could be taken as "protocol transparent" for outer interfaces
meaning that when interfacing the presented system to an outer system
users don't have to consider what protocol the outer system transceiving data stream is under
for example
the TCP/IP protocol or anything else
in the case that its I/O interface is a parallel port. Simulation and final experiment prove that the protocol presented is a working solution at a certain bit rate scale. 2012 IEEE.
Physical layer design for free space optical communication (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China
作者:
Wang H.
;
Zhang Q.
;
Guo J.
;
Guo J.
;
Wang H.
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  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
A small size Free Space Optical Communication System is introduced
including the hardware and the hardware specified physical layer protocol. In detail
the rapid synchronization method to reduce the handshake bandwidth requirement is demonstrated. The hardware of the system includes the laser driver system
the signal amplifying and shaping system
the data interface system. The hardware specified physical layer protocol is used to interface the outer data
serialize and deserialize the data stream
check transmission errors and schedule the data transmission. The overall system is a FIFO-like system and the user can use it as if he's operating a FIFO. The system is designed mainly for terrestrial FSO link whose signal channel is the atmosphere. Due to the complex composition and activity of the atmosphere
this signal channel brings in great influence on the transmitting laser in it
for example
the absorption and scattering of the atmosphere molecules and aerosols
the scintillation of received laser power caused by the turbulence of the atmosphere
all of which results in a much higher Bit Error Rate (BER) of the communication system than wired communication systems leading to frequent resynchronization. In our system
the sampling clock is generated locally using multi-phase sampling technique rather than PLLbased clock recovery
which helps to rapid synchronization. 2012 IEEE.
An immersed boundary method based on discrete stream function formulation for two- and three-dimensional incompressible flows
期刊论文
OAI收割
Journal of Computational Physics, 2011, 卷号: 230, 期号: 9, 页码: 3479-3499
作者:
Wang SZ(王士召)
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2012/04/01
Immersed Boundary Method
Discrete Stream Function Formulation
Incompressible Flow
Navier-Stokes Equations
Parallel Computing
Large-Eddy Simulation
Cartesian Grid Method
External Force-Field
Low-Reynolds-Number
Circular-Cylinder
Interface Method
Conservation Properties
Numerical-Solutions
Moving Boundary
Viscous-Flow
Transceiving protocol designc for a free space optical communication system (EI CONFERENCE)
会议论文
OAI收割
2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, November 16, 2008 - November 19, 2008, Beijing, China
Hualong W.
;
Wanxin S.
;
Zhongbao X.
收藏
  |  
浏览/下载:57/0
  |  
提交时间:2013/03/25
A new transceiving protocol is demonstrated for a Free Space Optical (FSO) communication system
and it's discussed in two parts: the transmitting protocol and the receiving protocol. During the discussion of these two parts
the cooperation of them is also discussed. Different from wired communication
an FSO system modulates the data on a narrow beam of laser transmitting through the free space or the atmosphere
and the protocol presented in this paper is mainly optimized for terrestrial Free Space Optical links
in which the signal channel of the system is mainly the atmosphere. Due to the complex composition and activity of the atmosphere
this signal channel brings in great influence on the transmitting laser in it
for example
the absorption and scattering of the atmosphere molecules and aerosols
the scintillation of received laser power caused by the turbulence of the atmosphere
all of which results in a much higher Bit Error Rate (BER) of the communication system. Thus in designing a protocol for an FSO system
more effort should be taken in the encoding of the data stream
the synchronization of the data stream
error checking and exception handling. The main function of the transmitting protocol includes interfacing the outer input data with a parallel port
buffering the input data
encoding the input data stream
serializing the parallel data and output the serialized data. It also has an output management unit to manage the activity of each part of the transmitting protocol. The main function of the receiving protocol includes filtering and synchronizing the input serial data stream
paralleling the serial data stream
decoding the input data
error checking
exception handling and interfacing the outer receiver with a parallel port. The entire transceiving protocol could be programmed into a single FPGA chip to improve system integrity and reduce the system cost. The presented protocol could be taken as "protocol transparent" for outer interfaces
meaning that when interfacing the presented system to an outer system
you don't have to consider what protocol the outer system transceiving data stream is under
for example
the TCP/IP protocol or anything else
in the case that its I/O interface is a parallel port. Simulation and final experiment prove that the protocol presented is working fine at a certain bit rate scale. 2009 SPIE.