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Implementation of Advanced Modified PCF in Large Telescope Control System
Shuai Xiaoying; Zhang Zhenchao; Zhu Yongtian
2008-07-14
会议录名称Advanced Software and Control for Astronomy II
卷号7019
期号7019
页码Vol.7019 23-1-8
会议日期2008-6-23
会议地点Marseille, France
会议主办者The International Society for Optical Engineering
出版者SPIE
摘要
Large Telescope Control System (TCS) is a complicated system, which contains thousands of actuators. Wired TCS is inconvenient to point and track for a large telescope. This paper proposes a TCS based on IEEE 802.11 Wireless Local Area Network (WLAN), which provides flexibility, reduced infrastructure costs, and greater convenience. The IEEE 802.11 standard MAC protocol includes the DCF and the PCF. The DCF is designed for asynchronous data transmission, while the PCF is designed for real-time data. The performance of a WLAN with DCF will fall when the number of wireless station increase in a basic service set (BSS). An advanced modified PCF (APCF) is presented to poll data from the AP to stations and response data from stations to the AP in CFP. The analysis indicates that APCF can improve communication performance, and is very suitable for large TCS.
关键词Pcf Telescope Control System Wlan Apcf Tcs
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文献类型会议论文
条目标识符http://ir.niaot.ac.cn/handle/114a32/552
专题会议论文
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Shuai Xiaoying,Zhang Zhenchao,Zhu Yongtian. Implementation of Advanced Modified PCF in Large Telescope Control System[C]:SPIE,2008:Vol.7019 23-1-8.
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