Studies of the Plasmasphere Boundary Layer with Distributed Arrays of Radio Instruments

分布式无线电仪器阵列的等离子体层边界层研究

• 批准号: 0455831
• 负责人: Anthea Coster
• 金额: $ 33.17万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0455831&HistoricalAwards=false
• 关键词: Studies; Plasmasphere; Boundary; Layer; Distributed

Multiple ground and space-based diagnostics are used to probe the plasmasphere boundary from mid-latitudes. The primary diagnostics include the Intercepted Signals for Ionospheric Science (ISIS) coherent software radio system, and an extant Global Positioning System (GPS) array, which are constructed and operated at no cost to this research. In addition to the GPS total-electron-content (TEC) maps and passive multi-static radar imaging by ISIS, the Millstone Hill Incoherent Scatter Radar (ISR) serves as a cross-calibration of ionospheric conditions, and TOPEX and JASON satellite are also used to augment the collected TEC database. The ISIS array is here composed of an expanded Manatash Ridge Radar in Washington State, and a collection of coherent imaging Doppler receivers placed by the University of Texas at Austin in an area around the Millstone Hill radar. University of Texas at Austin also contributes expertise with the Ionospheric Data Assimilation 3D (IDA3D) model. The GPS array used is the Canadian GPS Network for Ionospheric Modeling (CANGIM), which is expanding from four to nine receivers during the early period of this research effort under the auspices of the University of Calgary. These widely distributed ISIS and GPS arrays are a nascent example of the "distributed array of small instruments" or DASI, concept. The purpose of this DASI is to examine the evolution of ionospheric structures with a large-scale (mid-latitude to auroral northern hemisphere latitudes) context and high spatial resolution. Detailed statistical characterization of plasma transport, storm-time electric fields, and instability onset are planned.

使用多种地面和空间诊断方法从中纬度探测等离子体边界。 主要诊断包括电离层科学截获信号相干软件无线电系统和现有的全球定位系统阵列，这些系统的建造和运行对本研究没有任何费用。 除了ISIS的GPS总电子含量（TEC）地图和无源多静态雷达成像外，Millstone Hill非相干散射雷达（ISR）还可用于电离层条件的交叉校准，TOPEX和JASON卫星也可用于增强收集的TEC数据库。 ISIS阵列在这里由华盛顿州的一个扩展的马纳塔什岭雷达和德克萨斯大学奥斯汀分校放置在米尔斯石山雷达周围地区的一组相干成像多普勒接收器组成。 得克萨斯大学奥斯汀分校还提供了电离层数据同化3D（IDA3D）模型的专门知识。 所使用的全球定位系统阵列是加拿大电离层建模全球定位系统网络，在卡尔加里大学主持的这项研究工作的初期，该网络的接收器从4个扩大到9个。 这些广泛分布的ISIS和GPS阵列是“分布式小型仪器阵列”或DASI概念的一个新例子。 这一DASI的目的是研究大尺度（中纬度至极光北方半球纬度）背景下电离层结构的演变和高空间分辨率。 详细的等离子体传输，风暴时间电场，和不稳定性发作的统计特性的计划。