EAGER: Satellite TV Signal Measurement of Precipitable Water and Rain

EAGER：可降水和降雨的卫星电视信号测量

• 批准号: 1038349
• 负责人: Lars Dyrud
• 金额: $ 10万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2012-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1038349&HistoricalAwards=false
• 关键词: EAGER; Satellite; TV; Signal; Measurement

The investigators will conduct a feasibility study of a new method for making very densely spaced (as little as ~10-20 meters spacing) measurements of rain and precipitable water content. Measurement of rain and precipitable water content is critical to a broad range of human activities, from scientific studies of climate change to the production of electricity at hydroelectric plants. The effect of rainfall on microwave radars and communication links has been studied for decades, with impacts including: attenuation, backscatter, and polarization and phase change of the signal. While these effects are often seen as an engineering problem to be overcome, they simultaneously present a powerful opportunity to conduct science, especially in light of the proliferation of consumer satellite television. The expected outcomes will leverage off-the-shelf technology, such as three-frequency and three-look-angle microwave dishes and down-convertors, that cost less than $100 for a potentially state of the art instrument. A graduate student at Penn State University will participate in the study.

研究人员将对一种新的方法进行可行性研究，这种方法可以非常密集地(最小为10-20米)测量雨量和可降水量。从气候变化的科学研究到水电站的电力生产，测量雨量和可降水量对广泛的人类活动至关重要。几十年来，人们一直在研究降雨对微波雷达和通信链路的影响，影响包括：信号的衰减、后向散射、极化和相位变化。虽然这些影响通常被视为一个需要克服的工程问题，但它们同时也提供了一个进行科学研究的强大机会，特别是在消费卫星电视激增的情况下。预期的结果将利用现成的技术，如三频率和三个视角的微波碟子和下变频器，潜在的最先进仪器的成本不到100美元。宾夕法尼亚州立大学的一名研究生将参与这项研究。