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	Design of free-space optical transmission system in computer tomography equipment 期刊论文 OAI收割 Optical Engineering, 2018, 卷号: 57, 期号: 4, 页码: 4 作者: Liu, M.; Fu, W. W.; Zhang, T. \| 收藏 \| 浏览/下载：15/0 \| 提交时间：2019/09/17 computer tomography free-space optical transmission laser phase distance measurement Optics
	Research on the key technology of ATP system for free space optical communication (EI CONFERENCE) 会议论文 OAI收割 31st Chinese Control Conference, CCC 2012, July 25, 2012 - July 27, 2012, Hefei, China Meng H.; Liu X.; Zhang B. 收藏 \| 浏览/下载：14/0 \| 提交时间：2013/03/25 Free space optical communication is the bidirectional transmission technology that puts to use the laser beam as a carrier in space. Free space optical communication is generally used in the severe space environment. It is the mainly problem that the narrow beam of laser beam is high-precision aimed. and it is became very important that the technology of ATP is researched. Performance of the ATP system directly affects the performance of the quality of the free space optical communication. So research of the ATP is the key technology in FSO and this technology is discussed and analysed in the article. 2012 Chinese Assoc of Automati.
	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. 收藏 \| 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. 收藏 \| 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.
	The develop of 622Mbits/s free space laser communication system 会议论文 OAI收割 conference on optoelectronic devices and integration, beijing, peoples r china, nov 08-11, 2004 Zhou, Y; Xie, FZ; Yan, XJ; Fan, ST; Zuo, F 收藏 \| 浏览/下载：153/23 \| 提交时间：2010/03/29 free space laser communication system optical antenna semiconductor laser receive circuit laser driver circuit transmission of data and images