中国科学院机构知识库网格系统: 检索

Beam Scanning and Capture of Micro Laser Communication Terminal Based on MEMS Micromirrors 期刊论文 OAI收割
MICROMACHINES, 2023, 卷号: 14, 期号: 7
作者: Wang, Xuan; Han, Junfeng; Wang, Chen; Xie, Meilin; Liu, Peng

|

收藏 | 浏览/下载：28/0 | 提交时间：2023/08/18

free-space optical communication MEMS micromirror laser scanning and capture

Experimental demonstration of an improved control design and algorithm for optical communication terminal with disturbance 期刊论文 OAI收割
OPTIK, 2022, 卷号: 269
作者: Guo, Huinan

|

收藏 | 浏览/下载：60/0 | 提交时间：2022/10/11

Optical communication Terminal assembly Control analysis and design Iterative learning control Precision tracking

Encoding and decoding communications based on perfect vector optical vortex arrays 期刊论文 OAI收割
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2022, 卷号: 55, 期号: 43
作者: Long, Zixu; Hu, Huajie; Ma, Xin; Tai, Yuping; Li, Xinzhong

|

收藏 | 浏览/下载：38/0 | 提交时间：2022/10/10

optical vortex array vector optical field optical encoding and decoding communication

An acquisition technology of optical ground station in satellite-ground QKD 会议论文 OAI收割
作者: He, Dong; Huang, Yong-Mei; Wang, Qiang; Qi, Bo; Liu, Wan-Sheng

|

收藏 | 浏览/下载：31/0 | 提交时间：2018/12/20

Adenosinetriphosphate - Manufacture - Mergers and acquisitions - Optical communication - Optical links - Quantum communication - Quantum cryptography - Satellites - Technology transfer

Simulation test and inhibit method of forward scattered stray light of polarized beam split optical antenna 期刊论文 OAI收割
guangzi xuebao/acta photonica sinica, 2016, 卷号: 45, 期号: 4
作者: Lü, Juan; Ma, Xiao-Long; He, Ying-Hong; Yan, Xing-Tao; Xie, Pei-Yue

收藏 | 浏览/下载：26/0 | 提交时间：2016/11/23

Antennas Coherent scattering Forward scattering Lens antennas Lenses Optical communication Optical instruments Roads and streets Testing

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：15/0 | 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：31/0 | 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.

Research on satellite platform vibration compensation method based on liquid crystal steering system (EI CONFERENCE) 会议论文 OAI收割
2011 SSITE International Conference on Future Material Research and Industry Application, FMRIA 2011, December 1, 2011 - December 2, 2011, Macau, China
作者:

收藏 | 浏览/下载：17/0 | 提交时间：2013/03/25

This paper presents the disturbance compensation scheme based on liquid crystal steering system according to the problem that satellite platform vibration affects the tracking and pointing accuracy in space optical communication. The mathematical model of liquid crystal steering system is built. For improving convergence speed the adaptive controller based on posteriori estimation errors RLS lattice filter is designed which not only achieves fast adaptation but also reaches optimal steady-state disturbance compensation. Finally the simulation results show that this control scheme is valid and feasible. (2012) Trans Tech Publications Switzerland.

Research on satellite platform vibration compensation technology for space optical communication (EI CONFERENCE) 会议论文 OAI收割
2012 International Meeting on Opto-Electronics Engineering and Materials Research, OEMR 2012, July 27, 2012 - July 29, 2012, Shenyang, Liaoning, China
Han C.; Li X.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

The piezo-electric steering control system is used to compensate the vibration of satellite platform. The mathematical model of piezo-electric steering system is built. The adaptive controller based on improved LMS filter algorithm is designed according to this system characteristic. The adaptive delay filter is designed to solve slow convergence speed problem of traditional algorithm. Meanwhile the adaptive delay filter can also compensate phase delay of control circuit. The adaptive deviation filter is introduced and it effectively compensates the vibration deviation which is low frequency and high amplitude. The experimental results show that the remained errors are rad which meets space optical communication requirement and proves that this control scheme is valid and feasible. (2012) Trans Tech Publications Switzerland.

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：31/0 | 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.