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基于改进的多项式插值亚像素法电缆护套材料厚度测量

ISSN号：1001-1390
期刊名称：《电测与仪表》
时间：0
分类：TN912[电子电信—通信与信息系统;电子电信—信息与通信工程]
作者机构：[1]Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education, Southeast University, Nanjing 210003, China, [2]School of Information Engineering, Huangshan College, Huangshan 245021, China, [3]Petroleum Department, Petrovietnam University, Ba Ria 74000, Vietnam, [4]Ho Chi Minh City Industry and Trade College, Ho Chi Minh 760000, Vietnam
相关基金：National Natural Science Foundations of China（Nos.60872073,6097501,and 51075068）; the Doctoral Fund of Ministry of Education of China（No.20110092130004）; the Research Foundation and Education Bureau of Anhui Province of China（No.KJ2009B137）

中文摘要：

Medium access control( MAC) protocol of underwater acoustic communication network is a key technology for underwater acoustic networks( UANs). Most of the MAC protocols for wireless terrestrial communication networks have been designed with negligible propagation delay. If it is deployed directly in an underwater environment,the UANs will perform inefficiently. In this paper,the characteristics of underwater acoustic channel are modeled and simulated by using the OPNET simulation tool,which are the speed of sound, propagation loss, and four sources for ambient noise: the turbulence,shipping,wind driven waves and thermal noise. The performance of pure Aloha( P-Aloha),carrier sense multiple access with collision avoidance( CSMA / CA) and multiple access collision avoidance for wireless local area network( MACAW) protocols in underwater acoustic channel environment are evaluated. The different performance of protocols in underwater environment is compared in the simulation.

英文摘要：

Medium access control（ MAC） protocol of underwater acoustic communication network is a key technology for underwater acoustic networks（ UANs）. Most of the MAC protocols for wireless terrestrial communication networks have been designed with negligible propagation delay. If it is deployed directly in an underwater environment,the UANs will perform inefficiently. In this paper,the characteristics of underwater acoustic channel are modeled and simulated by using the OPNET simulation tool,which are the speed of sound, propagation loss, and four sources for ambient noise： the turbulence,shipping,wind driven waves and thermal noise. The performance of pure Aloha（ P-Aloha）,carrier sense multiple access with collision avoidance（ CSMA / CA） and multiple access collision avoidance for wireless local area network（ MACAW） protocols in underwater acoustic channel environment are evaluated. The different performance of protocols in underwater environment is compared in the simulation.

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