Abstract
The unmanned surface vehicle (USV) integrated with acoustic modems has some advantages such as easy integration, rapid placement, and low cost, which becomes a kind of selective novel node in the underwater acoustic (UWA) communication network and a kind of underwater or overwater communication relay as well. However, it is difficult to ensure the communication quality among the nodes on the network due to the random underwater acoustic channel, the severe marine environment, and the complex mobile node system. Aiming to model the communication characteristics of the USV, the multipath effect and Doppler effect are main concerns for the UWA communication in this paper, so that the ray beam method is utilized, the channel transmission function and the channel gain are obtained, and the mobile communication quality evaluation model is built. The simulation and lake experiments verify that the built mobile UWA communication quality evaluation model on USV can provide preference and technique support for USV applications.
Highlights
As unmanned platform and relative technology developed, the unmanned platform has become a hotspot for the ocean technique research and development which provides technique support for underwater network mobile relay and topology optimization [1]
The unmanned surface vehicle (USV) integrated with underwater acoustic modem has some advantages such as easy integration, rapid placement, and low cost so that it becomes a selective novel node for underwater network and a kind of underwater or overwater communication relay as well
Massachusetts Institute of Technology researched and developed the unmanned ship SCOUT [3]. They realized the underwater communication among several USV by underwater acoustic (UWA) communication modems, which can be used for developing the unmanned ship based communication and positioning system
Summary
As unmanned platform and relative technology developed, the unmanned platform has become a hotspot for the ocean technique research and development which provides technique support for underwater network mobile relay and topology optimization [1]. Massachusetts Institute of Technology researched and developed the unmanned ship SCOUT [3] They realized the underwater communication among several USV by UWA communication modems, which can be used for developing the unmanned ship based communication and positioning system. Murphy and his fellows developed an underwater communication system CAPTURE and designed the UWAC abstract physical layer for providing underwater data and image communication relay of different resolution ratio between mother vessel and AUVs [4]. Several recycle experiments including underwater data and sonar image were carried out in 2011 and 2012, which verified the practicability of the system All these mentioned application experiments have met the same problem that UWA channel is time-space-frequency varying.
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