Advanced Modular Incoherent Scatter Radar (AMISR) Graduate Studies: Incoherent and Coherent Scatter Applications of the System

高级模块化非相干散射雷达 (AMISR) 研究生学习：系统的非相干和相干散射应用

• 批准号: 0538343
• 负责人: Michael Kelley
• 金额: --
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0538343&HistoricalAwards=false
• 关键词: Advanced; Modular; Incoherent; Scatter; Radar

The investigators will study the equatorial electrojet and Polar Mesospheric Summer Echoes (PMSE) using the Advanced Modular Incoherent Scatter Radar (AMISR) systems at Jicamarca, Peru, and Poker Flat, Alaska. The graduate student to be supported under this award spent a year helping with the calibration and validation of the AMISR system at Jicamarca. After the installation and initial engineering tests of this prototype system, it was used to make observations of the equatorial electrojet. The equatorial electrojet is a sheet of current flowing in the ionosphere around the earth at the magnetic equator. The plasma instabilities in the equatorial electrojet are still not well understood even after forty years of study by rockets and radars. By measuring electrojet properties using radars at Jicamarca at two different frequencies, the investigators will obtain new information about the spatial and temporal behavior of the irregularities. After gaining this experience, the investigators will apply that knowledge to the observations of PMSE using the full AMISR system at Poker Flat, Alaska. Although PMSE have been observed by many radar systems, the opportunity to use AMISR, with its unprecedented steering ability, will shed new light on the processes in the mesosphere that give rise to these echoes. The graduate student to be supported is from an underrepresented minority group, and his involvement continues a strong tradition at Cornell in encouraging young scientists from diverse backgrounds.

研究人员将使用位于秘鲁Jicamarca和阿拉斯加Poker Flat的高级模块化非相干散射雷达（AMISR）系统研究赤道电射流和极地中层夏季回波（PMSE）。 获得该奖项支持的研究生花了一年时间帮助Jicamarca校准和验证AMISR系统。 在这一原型系统安装和初步工程测试之后，它被用来观测赤道电射流。 赤道电喷流是在地球磁赤道附近的电离层中流动的电流片。 赤道电喷流中的等离子体不稳定性，即使经过四十年的火箭和雷达研究，仍然没有得到很好的理解。 通过在Jicamarca使用两种不同频率的雷达测量电射流特性，研究人员将获得有关不规则性空间和时间行为的新信息。 在获得这些经验后，研究人员将把这些知识应用于在阿拉斯加扑克坪使用完整的AMISR系统对PMSE的观测。 虽然许多雷达系统已经观测到PMSE，但利用AMISR的机会，凭借其前所未有的转向能力，将为中间层产生这些回波的过程提供新的线索。 将得到支持的研究生来自代表性不足的少数群体，他的参与延续了康奈尔大学鼓励来自不同背景的年轻科学家的强大传统。