High-Sensitivity Radiometers & Receivers (HI RAD)

高灵敏度辐射计

• 批准号: 1000228619-2012
• 负责人: Belostotski, Leonid
• 金额: $ 7.29万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Canada Research Chairs
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=642629
• 关键词: Sensitivity; Radiometers; Receivers; HI; RAD

The proposed research deals with investigations of design practices of high-sensitivity antenna-array receiver and radiometer systems. The focus will be on identification of and accounting for all impediments to system sensitivity during design. The theoretical analysis of noise in antenna arrays and the resultant design insights will be verified experimentally with antenna-array systems demanding highly sensitive receivers for GPS systems and the Square Kilometre Array radio telescope (SKA), which is an international mega project. The feasibility of designing sensitive antenna arrays at sub-THz frequencies will be evaluated with a proof-of-concept design of the Cerro Chajnantor Atacama Telescope heterodyne array instrument.

拟议的研究涉及高灵敏度天线阵列接收机和辐射计系统的设计实践的调查。重点将是在设计过程中识别和说明系统灵敏度的所有障碍。天线阵列中噪声的理论分析和由此产生的设计见解将通过要求高灵敏度GPS系统接收器的天线阵列系统和作为国际大型项目的平方公里阵列射电望远镜（SKA）进行实验验证。将通过Cerro Chajnantor Atacama望远镜外差阵列仪器的概念验证设计来评估在亚太赫兹频率下设计灵敏天线阵列的可行性。