CAJ | 학술논문

流星突发通信不同于传统的通信,其是低速率通信,具有突发、不连续、不定时的特性.因此,流星余迹通信的复杂性要求有必要对其通信信道进行建模.在流星通信链路中,流星的辐射分布、可用流星率和占空比是影响流星通信信道性能的重要参数.流星辐射分布在不同季节不同时间都各不相同,因此准确预测流星通信链路在不同时间的流星辐射分布,从而改变大圆路径上天线的指向,对提高通信速率显得非常重要.同时,准确预测流星突发通信链路上的可用流星率和占空比,有助于准确预测并建立流星突发信道模型.本文分析研究了偶发流星辐射分布建模的发展,建立了偶发流星日心空间和地心空间的几何关系,得到了流星突发通信信道参数预测模型.并将预测模型应用于流星通信链路,预测结果与通信链路观测结果比较一致,为流星通信系统的建立提供了技术支持.
류성돌발통신불동우전통적통신,기시저속솔통신,구유돌발、불련속、불정시적특성.인차,류성여적통신적복잡성요구유필요대기통신신도진행건모.재류성통신련로중,류성적복사분포、가용류성솔화점공비시영향류성통신신도성능적중요삼수.류성복사분포재불동계절불동시간도각불상동,인차준학예측류성통신련로재불동시간적류성복사분포,종이개변대원로경상천선적지향,대제고통신속솔현득비상중요.동시,준학예측류성돌발통신련로상적가용류성솔화점공비,유조우준학예측병건립류성돌발신도모형.본문분석연구료우발류성복사분포건모적발전,건립료우발류성일심공간화지심공간적궤하관계,득도료류성돌발통신신도삼수예측모형.병장예측모형응용우류성통신련로,예측결과여통신련로관측결과비교일치,위류성통신계통적건립제공료기술지지.
Meteor Burst Communication (MBC) is different from traditional communications.It is a low data rate communication with characteristics of burst,discontinuity and unfixed timing.It is necessary to construct prediction model of MBC channel due to its complexities.The Sporadic Meteor Radiant Distribution (SMRD),the usable Meteor Rate (MR) and Duty Cycle (DC) are important factors impacting channel of the MBC links.SMRD varies with seasons and time,therefore it is very crucial to accurately predict the SMRD to change the direction of antennae and improve the data rate.Furthermore,the correct model of MBC channel can be constructed if MR and DC are accurately predicted.By investigating the development of the modeling of meteor radiant distributions,the geometry relationship of the heliocentric and the geocentric space of sporadic meteor is constructed.The theoretic prediction models of Meteor Burst Communication (MBC) channel parameters are derived.These models are applied in MBC links.The results predicted by these models have good agreement with observation data.The prediction models of these channel parameters given herein can be helpful to construct meteor communication system.