Analysis of Protocols for Data Collection Network System via Meteor burst

每天有数十亿颗小流星进入地球大气层。它们产生电离尾迹，称为流星暴，能够将无线电信号反射回地球。流星余迹通信是利用流星余迹进行超视距通信的一种方法。虽然平均数据吞吐量不大，但MBC比卫星系统具有显著的经济优势。在本研究中，我们利用数值模型分析了数据采集系统的协议，并提出了一种新的协议。我们使用静冈大学运营的MBC实验系统RANDOM和我们构建的模拟系统进行了这项研究。在本研究的第一个学期，我们提交了一份关于MBC数据收集协议的各种方法的分类和对IEICE事务的分析的论文，本文表明，组轮询方法是最有效的方法。为了从理论上分析功率控制探测方案的效率，需要对所使用的通信路径建立数学模型。为此，在第二学期，我们用RANDOM做了几个实验，得到了分析PCPS所必需的数学模型;在第三学期，我们向IEICE的交易提交了一份关于这些分析的论文;此外，为了检验流星雨对MBC的影响，我们观测了1998年11月出现的狮子座流星雨。结果表明，即使出现流星雨这种MBC特有的现象，我们的数学模型也是有用的。

Billions of tiny meteor enter the earth's atmosphere daily. They generate ionized trails , called meteor burst, capable of reflecting radio signals back to earth. Meteor burst communication (MBC) is a beyond line of sight communication method using these trails. Although the average data throughput is modest, MBC has significant economic advantages over satellite systems. Then, data collection systems like a telemetry systems are the most suitable application for MBC.In this research, we analyzed protocols of data collection systems by using numerical model, and proposed a new protocol. We have done this research using MBC experiment system RANDOM which Shizuoka University operates and simulation systems which we construct. Grant-in-Aid for Scientific Research was spent to traveling expenses of the observation experiments and the construction of the simulation systems.At the first term of this research, we submitted a paper about classification of various methods of the MBC data collection protocol and those analyses to the transactions of IEICE, In this paper, it is shown that the group polling method is the most efficient method. Moreover, we proposed a new protocol called power controlled probe scheme (PCPS).To analyze the efficiency of POPS theoretically, it was necessary to arrange the mathematical model of the communication path which had been used. Therefor, at the second term, we had done several experiments with RANDOM.As a result, We obtained a mathematical model necessary for analyzing PCPS.At the third term, we submitted a paper about those analyses to the transactions of IEICE.Moreover, to examine the influence of meteor shower on MBC, we observed Leonids meteor shower which had appeared in November, 1998. As a result, even if meteor shower, which is a peculiar phenomenon for MBC, appears, it is shown that the our mathematical model is useful.