Passive Coherent Radar Studies of the Auroral E Region

极光 E 区的被动相干雷达研究

• 批准号: 0310233
• 负责人: John Sahr
• 金额: --
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0310233&HistoricalAwards=false
• 关键词: Passive; Coherent; Radar; Studies; Auroral

The investigators will conduct ionospheric research using a new radar technique called passive radar. The passive radar makes use of commercial FM radio broadcasts as transmitters. Signals acquired by low-cost receivers are analyzed to discriminate and recover echoes scattered in the ionosphere. The radar requires no transmitter and no radio license, and is therefore a useful tool to demonstrate radiowave observing techniques to students from high school through graduate school. Existing receivers will be augmented by two receivers in Canada to study E region irregularities at auroral latitudes. The research has four primary goals: (1) to create a dedicated radar instrument that is sensitive to 1.5 meter irregularities in the auroral zone, (2) to use the instrument to study the temporal and spatial evolution of auroral electrojet irregularities, (3) to improve the capabilities of the passive radar technique, and (4) to provide a rich educational and research experience for undergraduate and graduate students. In addition to studying ionospheric irregularities in the auroral zone, the passive radar will be able to observe the development of the subauroral polarization stream that develops during large magnetic storms and is a source of scintillation in communication signals. This novel radar technique has attracted international attention because of its potential application to aerospace and military systems. This award will provide for continued development of the technique, along with training of the next generation of radio engineers.

研究人员将使用称为无源雷达的新雷达技术进行电离层研究。 被动雷达利用商用FM广播作为发射机。 分析由低成本接收器获得的信号，以区分散布在电离层中的回波。 雷达不需要发射器，也不需要无线电许可证，因此是一种有用的工具，可以通过研究生院向高中的学生展示放射线的观察技术。 现有的接收器将被加拿大的两名接收器增加，以研究Auroral纬度的E地区违规行为。 这项研究具有四个主要目标：（1）创建一种专用雷达仪器，对极光区的1.5米不规则性敏感，（2）使用该工具来研究Auroral Electrojet不规则性的时间和空间演化，（3）以改善被动雷达技术的能力，以提供较丰富的教育和毕业的经验和研究丰富的教育和研究。 除了研究极光区的电离层不规则性外，被动雷达还将能够观察到在大型磁性风暴期间发展的下引起的极化流的发展，并且是通信信号中闪烁的来源。 这种新颖的雷达技术引起了国际关注，因为它可能应用于航空航天和军事系统。 该奖项将为该技术的持续开发以及下一代无线电工程师的培训。