Research Of Failure Mechanism And Service Safety Of Arctic Ocean Observation Buoy System

Since it's playing a vital role of the global climate system,Arctic Ocean ice zone has a significantly effect on the intensity and scope of the Arctic cold air.Nowadays,the thickness of Arctic Ocean ice and area were changed significantly,which has a profound influence on our nation's and global climate.Thus obtaining the physical parameters of polar sea ice and monitoring the dynamic value in ice scope becomes the basis of polar climate research.However,according to geographical and environmental characteristics of the Polar Regions,it is necessary to set a system that could function in an all-weather,all-time and long-term continuous way under the harsh environment.Therefore,the ocean buoy system becomes an important tool for monitoring the marine environment and climate in the Polar Regions.Through installing buoys in the Arctic Ocean,observation in real-time monitoring of meteorological and hydrological information in this region can be achieved,and ultimately obtain the relationship between the various parameters of the region.Nevertheless,due to the harsh,extreme weather in Arctic,it is particularly urgent to improve the performance of buoy service safety.Therefore,research of failure mechanism and the safety of the polar ocean buoys for meteorological observation and the clarifying of climate change in Polar Regions are of great significance.Firstly,the the fault mechanism of polar buoy communication is introduced.Secondly,the development of safety study sensor networks domestic and international is described.Thirdly,the overall structure of the buoy is designed,simulated by AQWA software,and finally the designed parameters of the buoy body can be used for normal operation in the next chapter.At the end of this paper,for buoy's service safety and reliability,a research of acoustic sensor network which is equipped with the buoys was studied.Since the sensor network underwater having limited power resources and bandwidth characteristics,routing information based on the geographic research has become the first choice.Although many of the geographic routing detours policy does not apply to the three-dimensional underwater network topology,spanning tree routes for such a network can find a circuitous path effectively.However,the effectiveness of tree routing depends largely on the prebuilt quality of spanning tree.Most existing spanning tree algorithm is based on the top-down and centralized manner,it did not take available network bandwidth into account,and it is possible to generate a poor performance routing tree.In this paper,we propose a new spanning tree called the bandwidth-perception routing tree,which use a bottom-up approach to building a spanning tree and will take the available bandwidth into account.The simulation results show that,compared to other spanning trees,bandwidth-perception routing tree has less convex conflict hull and higher path throughput and resulting in better routing reliability of three-dimensional underwater sensor networks,thereby increasing the buoy's service safety.