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Evaluation of Underwater Optical-Acoustic Hybrid Network 被引量:4
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作者 Seongwon Han Youngtae Noh +3 位作者 Richard Liang roy chen Yung-Ju cheng Mario Gerla 《China Communications》 SCIE CSCD 2014年第5期49-59,共11页
The deployment of underwater networks allows researchers to collect explorative and monitoring data on underwater ecosystems.The acoustic medium has been widely adopted in current research and commercial uses,while th... The deployment of underwater networks allows researchers to collect explorative and monitoring data on underwater ecosystems.The acoustic medium has been widely adopted in current research and commercial uses,while the optical medium remains experimental only.According to our survey onthe properties of acoustic and optical communicationsand preliminary simulation results have shown significant trade-offs between bandwidth,propagation delay,power consumption,and effective communication range.We propose a hybrid solution that combines the use of acoustic and optical communication in order to overcome the bandwidth limitation of the acoustic channel by enabling optical communicationwith the help of acoustic-assisted alignment between optical transmitters and receivers. 展开更多
关键词 optical communication acoustic communication underwater
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作者 陈路(图/文) 《旅行者》 2019年第4期10020-10023,共4页
线条,是摄影画面的骨架,有着丰富的表现力与强烈的艺术美感。我们生活的世界中充满了线条。海天一色的分界、都市建筑的轮廓、漫山遍野的白桦林、乡间蜿蜒曲折的小路……在摄影构图中合理地应用线条,能有效地引导观众视线,增强画面的视... 线条,是摄影画面的骨架,有着丰富的表现力与强烈的艺术美感。我们生活的世界中充满了线条。海天一色的分界、都市建筑的轮廓、漫山遍野的白桦林、乡间蜿蜒曲折的小路……在摄影构图中合理地应用线条,能有效地引导观众视线,增强画面的视觉冲击力,还能创造出特定的情绪和氛围,让作品更“有味道”,横竖线条有平衡和稳定的情绪的作用,而S形线条让画面更具动感。 展开更多
关键词 线条 世界 摄影画面 视觉冲击力 艺术美感 摄影构图 表现力 白桦林
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