CAREER: Exploiting the Low/Medium Frequency (LF/MF) Radio Band for Ionospheric Remote Sensing

提案编号：AGS 1653114 主要研究员：Morris Cohen 机构：佐治亚理工学院 提案标题：职业：利用 LF/MF 无线电频段进行电离层遥感 该提案旨在使用 300 kHz 附近的无线电传输来测量 60-100 km 高度范围内的电子密度。这些高度的电子密度受到对流层天气（即雷暴）以及地震、地磁和太阳活动的干扰。这些干扰会影响用于导航、定位和通信的无线电波的传播，但其影响从未被系统地探讨过。拟议的工作本质上主要是实验性的，目的是使用机会信标信号来表征和量化几种类型的电离层扰动的可检测性。 PI 将设计和制造接收器，用于检测从 GPS 信标网络传输的近 300 kHz 的 LF/MF 无线电波。计划在中纬度地区静态条件下和日食期间以及高纬度地区静态和人工加热条件下开展一系列观测活动。该提案还包含三个教育部分： 1. 1-2 名博士的材料。论文； 2. 一个本科水平的气球项目，用于进行相关测量； 3. 通过在农村地区学校安装 LF/MF 接收器进行 K-12 教学和参与。

Proposal Number: AGS 1653114Principal Investigator: Morris CohenInstitution: Georgia Tech Proposal title: CAREER: Exploiting the LF/MF Radio Band for Ionospheric Remote Sensing This proposal aims to measure electron density in the 60-100 km altitude range using radio transmissions near 300 kHz. Electron density at these altitudes is perturbed by tropospheric weather (i. e., thunderstorms), and by seismic, geomagnetic, and solar activity. These disturbances affect the propagation of radio waves used for navigation, positioning and communication, but their effects have never been systematically explored. The proposed work is primarily experimental in nature, with the objectives of characterizing and quantifying the detectability of several types of ionospheric disturbances using beacon signals of opportunity. The PI will design and build receivers that will detect LF/MF radio waves near 300 kHz transmitted from a network of GPS beacons. A series of observation campaigns is planned at midlatitudes under quiescent conditions and during a solar eclipse, and at high latitudes under quiescent and artificially heated conditions. The proposal also contains three educational components: 1. Material for 1-2 Ph.D. dissertations; 2. An undergraduate level balloon project to make correlative measurements; 3. K-12 instruction and participation via installation of LF/MF receivers in rural area schools.