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题名: Validating the Variability of Snow Accumulation and Melting From GPS-Reflected Signals: Forward Modeling
作者: Najibi, Nasser1, 2; Jin, Shuanggen3, 4; Wu, Xuerui5
刊名: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
出版日期: 2015-06-01
卷号: 63, 期号:6, 页码:2646-2654
关键词: GPS-reflected signals ; power spectral density ; snow accumulation ; snow melting
DOI: 10.1109/TAP.2015.2414950
文章类型: Article
英文摘要: The variability of snow accumulation and melting is one of the most important interactions of the Earth's surface with atmosphere through energy transmission and mass balance. In this paper, the effects of snow accumulation and melting together with bare soil and fixed snow depth on the reflected global positioning system (GPS) signals are investigated using GPS antenna gains and multipath signal. The reflected GPS signals are modeled and employed to analyze the interactions of snow accumulation, snow melting, bare soil, and fixed snow depth at BAKE and KUUJ GPS stations in Northern Canada. The results show the clear independency of the snow accumulation and melting variations with bare soil and fixed snow depth, which are validated from GPS-reflected signals as well. The modeled reflected GPS signals indicate the higher frequency of snow accumulation and snow melting than that of bare soil and fixed snow depth, while the estimated power spectral density of the GPS-reflected signals shows the higher signal power of coherence function difference. Furthermore, the GPS observations at BAKE and KUUJ sites confirm such variations with a good agreement during the snow accumulation, melting, bare soil, and fixed snow depth on the ground.
WOS标题词: Science & Technology ; Technology
类目[WOS]: Engineering, Electrical & Electronic ; Telecommunications
研究领域[WOS]: Engineering ; Telecommunications
关键词[WOS]: GNSS SIGNALS ; ICE-SHEET ; MULTIPATH ; DEPTH ; SIMULATIONS ; GREENLAND ; ANTENNA ; OCEAN
收录类别: SCI
语种: 英语
WOS记录号: WOS:000357605400025
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16001
Appears in Collections:毫米波和亚毫米波技术实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.CUNY, New York, NY 10031 USA
3.Chinese Acad Sci, Key Lab Planetary Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
4.Bulent Ecevit Univ, TR-67100 Zonguldak, Turkey
5.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
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