Research On The Deployment Of Integrated Satellite-Terrestrial Relay Network For Polar Emergency Response

With the implementation of China’s marine power strategy,the field and scope of polar scientific research are constantly expanding,and technological innovation and application efforts are constantly increasing.However,there are still significant communication and data transmission bottlenecks in polar observation and scientific research activities,and critical technological breakthroughs are urgently needed in polar remote communication and operational support.This article focuses on the deployment research of Integrated Satellite-Terrestrial Relay Network(ISTRN)for polar emergency,focusing on the optimization scheduling of edge tasks in satellite ground fusion relay networks,target search methods in application scenarios,and the design of dual satellite fusion satellite system:(1)A method for deploying ISTRN in emergency communication scenarios in polar regions is proposed.A sub regional computing network is constructed at the edge of the central cloud and ground mobile network,and a business scenario optimization experiment is designed using Q-learning based edge computing offloading strategy to evaluate the joint indicators of delay and energy consumption.Compared with the experimental results of traditional task offloading decision-making methods,the ISTRN improves its ability to quickly respond to events.(2)A polar region emergency path planning algorithm is proposed,which combines Spectral clustering algorithm and R-tree index strategy.When using ships as edge devices in ground mobile networks,in a general business scenario in an ISTRN environment,the iceberg objects that ships may encounter are clustered and divided according to distance values,providing optimization ideas for rapid data processing in ship navigation observation technology and route planning methods.(3)A relay network simulation platform for multi-satellite fusion is established,which can conduct assessments of satellite coverage and communication service quality in polar regions.By comparing the public service performance of several typical satellite systems,it proves that the BDS and the Iridium satellite system have better performance than a single satellite system in terms of sustainable coverage of polar satellite signals,navigation and positioning accuracy,and accuracy attenuation factor values.