Collaborative Research: CEDAR: Comparative Investigation of Kilometer-scale Auroral E and F Region Irregularities with a Global Positioning System (GPS) Scintillation Array

合作研究：CEDAR：使用全球定位系统 (GPS) 闪烁阵列对公里级极光 E 和 F 区域不规则现象进行比较研究

• 批准号: 1651466
• 负责人: Donald Hampton
• 金额: $ 4.87万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1651466&HistoricalAwards=false
• 关键词: Collaborative; Research; CEDAR; Comparative; Investigation

Ionospheric irregularities diffract and refract radio waves. These effects present as Global Positioning System (GPS) signal phase and/or amplitude scintillation. The proposed activities consist of analyzing ionospheric irregularities sensed by a GPS scintillation array at the Poker Flat Research Range (PFRR) in Alaska that can resolve horizontal scales as small as 10 km. The Principal Investigators (PIs) will recover properties of the plasma structures such as electron content, drift velocity, and the horizontal dimensions of the irregularities. A primary research goal is to use the spatial structuring information to characterize the E- and F-region turbulence energy cascades. These tasks will clarify whether turbulence explains observed GPS scintillations, and enhance understanding of the role of turbulence in magnetosphere-ionosphere coupling. Broader impacts include career development of 2 junior faculty - at least one of them female - and graduate student support. This research is also highly pertinent to the National Space Weather Action Plan. During extreme events, the E- and F-region irregularities that are the focus of this research's science can migrate to lower latitudes and significantly affect communications and navigation systems. Through its support and utilization of GPS, radio and optical data, this research maintains observational capability for space-weather operations.

电离层不规则性衍射和折射无线电波。这些效果作为全球定位系统（GPS）信号阶段和/或振幅闪烁。所提出的活动包括分析在阿拉斯加扑克扁平研究范围（PFRR）中通过GPS闪烁阵列感测的电离层不规则性，该阵列可以解决水平尺度至10 km的水平尺度。主要研究者（PIS）将恢复等离子结构的性质，例如电子含量，漂移速度和不规则性的水平尺寸。一个主要的研究目标是使用空间结构信息来表征E-F-Region湍流能量级联。这些任务将阐明湍流是否解释了观察到的GPS闪烁，并增强对湍流在磁层 - 离子层耦合中的作用的理解。更广泛的影响包括2个初级教师的职业发展 - 至少其中一个女性 - 以及研究生的支持。这项研究也与国家太空天气行动计划高度相关。在极端的事件中，这项研究的重点的电子和F区不规则性可以迁移到较低的纬度，并显着影响通信和导航系统。通过其支持和利用GP，无线电和光学数据，这项研究保持了空间天气操作的观察能力。