Analysis of Protocols for Data Collection Network System via Meteor burst

每天有数十亿颗微小的流星进入地球大气层。它们会产生被称为流星爆发的电离轨迹，能够将无线电信号反射回地球。流星爆发通信(MBC)是一种利用这些轨迹的视线外通信方法。尽管MBC的平均数据吞吐量不高，但相比卫星系统，MBC具有显著的经济优势。然后，像遥测系统这样的数据采集系统是最适合用于MBC的。在本研究中，我们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。我们利用静冈大学运营的MBC实验系统RANDOM和我们构建的模拟系统进行了这项研究。在本研究的第一期，我们提交了一篇关于MBC数据采集协议的各种方法的分类的论文，并对IEICE的交易进行了分析，结果表明，组轮询方法是最有效的方法。此外，我们还提出了一种新的协议--功率控制探测方案(PCPS)，为了从理论上分析POPS的效率，有必要安排已使用的通信路径的数学模型。因此，在第二个学期，我们用RANDOM做了几次实验，得到了一个分析PCPS所需的数学模型。在第三个学期，我们向IEICE的交易提交了一篇关于这些分析的论文。此外，为了考察流星雨对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MBC特有的流星雨现象，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.