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CAS IR Grid
机构
数学与系统科学研究院 [3]
长春光学精密机械与物... [2]
武汉物理与数学研究所 [2]
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OAI收割 [7]
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期刊论文 [5]
会议论文 [2]
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2010 [1]
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1996 [1]
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The research on the automatic measurement of frequency characteristics of opto-electronic platform (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者:
Liu H.
;
Liu H.
;
Chen J.
;
Liu H.
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浏览/下载:30/0
  |  
提交时间:2013/03/25
A new frequency characteristic test method is proposed based on the digitization characteristics of optoelectronic platform servo system. First a digital processing controller is used to automatically test the entire process and tested data are uploaded to a PC through CAN-bus
and then the tested data are transferred into accurate transfer function with the Levy method. Here we discuss the testing steps
the data processing
the extraction
the Bode diagram plotting and the model identification in detail. The corresponding experiments are carried out
and the results show that the method is simple with the features of high efficiency
high precision and engineering feasibility. 2010 IEEE.
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.
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浏览/下载:63/0
  |  
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.
Estimates for the hyper-order of solutions of certain linear differential equations
期刊论文
OAI收割
ACTA MATHEMATICA SCIENTIA, 2008, 卷号: 28, 期号: 2, 页码: 393-400
作者:
Jiang Liangying
;
Chen Zongxuan
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  |  
浏览/下载:19/0
  |  
提交时间:2015/10/13
linear differential equation
entire function
hyper-order
genus
Normal families and uniqueness of entire functions and their derivatives
期刊论文
OAI收割
ACTA MATHEMATICA SINICA-ENGLISH SERIES, 2007, 卷号: 23, 期号: 6, 页码: 973-982
作者:
Chang, Jiang Ming
;
Fang, Ming Liang
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收藏
  |  
浏览/下载:12/0
  |  
提交时间:2018/07/30
entire function
normal family
unicity theorem
On the hyper order of solutions of higher order differential equations
期刊论文
OAI收割
CHINESE ANNALS OF MATHEMATICS SERIES B, 2003, 卷号: 24, 期号: 4, 页码: 501-508
作者:
Chen, ZX
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收藏
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浏览/下载:18/0
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提交时间:2018/07/30
differential equation
entire function
hyper order
Normal family of compositions of holomorphic functions and their high order derivatives
期刊论文
OAI收割
ACTA MATHEMATICA SCIENTIA, 2003, 卷号: 23, 期号: 4, 页码: 544-548
作者:
Deng, FW
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浏览/下载:11/0
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提交时间:2015/12/03
normality
entire function
New distributions over Wiener and Euclidean spaces
期刊论文
OAI收割
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY, 1996, 卷号: 39, 期号: 9, 页码: 925-934
作者:
Imkeller, P
;
Yan, JA
  |  
收藏
  |  
浏览/下载:17/0
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提交时间:2018/07/30
abstract Wiener space
G-entire function
G-holomorphic function
S-transform
H-transform