نتایج جستجو برای: underwater acoustic communication

تعداد نتایج: 438943  

2018
Xuefeng Zhong Fangjiong Chen Jiasheng Fan Quansheng Guan Fei Ji Hua Yu

Underwater acoustic communication network (UACN) has been considered as an essential infrastructure for ocean exploitation. Performance analysis of UACN is important in underwater acoustic network deployment and management. In this paper, we analyze the network throughput of three-dimensional randomly deployed transmitter-receiver pairs. Due to the long delay of acoustic channels, complicated n...

Journal: :Ad Hoc Networks 2016
Ian F. Akyildiz Pu Wang Shih-Chun Lin

Underwater communication systems have drawn the attention of the research community in the last 15 years. This growing interest can largely be attributed to new civil and military applications enabled by large-scale networks of underwater devices (e.g., underwater static sensors, unmanned autonomous vehicles (AUVs), and autonomous robots), which can retrieve information from the aquatic and mar...

2012
Roald Otnes Alfred Asterjadhi Paolo Casari Michael Goetz Thor Husøy Ivor Nissen Knut Rimstad Paul A. van Walree Michele Zorzi

This is the authors' manuscript of the literature survey monograph " Underwater acoustic networking techniques " , published in the series " SpringerBriefs in Electrical and Computer Engineering ". The content is identical, but the published version has a much nicer layout, a handier format, and separate reference lists for each chapter. The authors have retained the rights to share this work i...

2017
Xinbin Li Chenglin Zhang Lei Yan Song Han Xin-Ping Guan

Target localization, which aims to estimate the location of an unknown target, is one of the key issues in applications of underwater acoustic sensor networks (UASNs). However, the constrained property of an underwater environment, such as restricted communication capacity of sensor nodes and sensing noises, makes target localization a challenging problem. This paper relies on fractional sensor...

2013
Rakesh V S

The Ocean remains the least explored frontiers. Many oceanic and marine applications seen relatively slow in exploiting the state of the art info-communication technologies. Acoustic communications is the most promising mode of communication underwater. Because of high error rate and long propagation delay of the acoustic channel, it is difficult to provide energy efficient communication. We pr...

2015
Rie Saotome Tran Minh Hai Yasuto Matsuda Taisaku Suzuki Tomohisa Wada

In order to explore marine natural resources using remote robotic sensor or to enable rapid information exchange between ROV (remotely operated vehicles), AUV (autonomous underwater vehicle), divers, and ships, ultrasonic underwater communication systems are used. However, if the communication system is applied to rich living creature marine environment such as shallow sea, it suffers from gene...

2018
Zheping Yan Da Xu Tao Chen Wei Zhang Yibo Liu

Unmanned underwater vehicles (UUVs) have rapidly developed as mobile sensor networks recently in the investigation, survey, and exploration of the underwater environment. The goal of this paper is to develop a practical and efficient formation control method to improve work efficiency of multi-UUV sensor networks. Distributed leader-follower formation controllers are designed based on a state f...

Journal: :JCP 2013
Fei Yuan Ji Zhang En Cheng

A simulation based on Gilbert-Elliot packet loss model is developed to simulate an image transmitting system in underwater acoustic channel. This developed system is applied as a platform to study the relation between image quality assessment parameter PSNR, image activity measure (IAM) and channel’s packet loss rate. A group of sample images were transmitted in this communication system and a ...

2010
Shengli Zhou Robert Headrick

1. Advanced communication techniques of sparse channel sensing and nonbinary LDPC coding. Underwater acoustic channels are naturally sparse, but how to effectively exploit the sparsity is a challenging task. We will investigate the recently developed “compressive sensing” algorithms for sparse channel estimation in the context of multicarrier acoustic communications. On the other hand, channel ...

2013
Shengli Zhou Robert Headrick

1. Advanced communication techniques of sparse channel sensing and nonbinary LDPC coding. Underwater acoustic channels are naturally sparse, but how to effectively exploit the sparsity is a challenging task. We will investigate the recently developed “compressive sensing” algorithms for sparse channel estimation in the context of multicarrier acoustic communications. On the other hand, channel ...

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