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题名: Azimuth High Resolution for a Conically Scanned Pencil-Beam Scatterometer Using Rotating Azimuth Doppler Discrimination
作者: Wang, Gang; Dong, Xiaolong; Zhu, Di; Bao, Qingliu
作者部门: 微波遥感部
通讯作者: Dong, Xiaolong (dongxiaolong@mirslab.cn)
关键词: Snow ; Snow melting systems
刊名: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
ISSN号: 1939-1404
出版日期: 2017
卷号: 10, 期号:2, 页码:572-579
收录类别: EI
英文摘要: In order to satisfy a relatively high resolution for the retrieval of snow water equivalent, an X/Ku-band dual-frequency full-polarized SCATterometer (DFPSCAT) onboard Water Cycle Observation Mission (WCOM) satellite is designed for high-resolution observations. However, given the following situations, the method called 'rotating azimuth Doppler discrimination' is proposed, which can satisfy the resolution requirement and real-time processing: 1) the conically rotation rate of antenna is relatively fast; 2) the swath width is larger than 1000 km; and 3) day or night observation capabilities are required. Considering the complexity of the system's design and the improvement of azimuth resolution capability, a burst pulsing scheme is addressed to satisfy the numbers of azimuth sampling. The simulation model is used to analyze the feasibility of azimuth discrimination method based on geometry and system parameters. It is shown that the achievable azimuth resolution is about 2-5 km at far end of the swath and only 5km at near end of the swath. The results show that when the size of a slice is set as 2-5 km, the Kpcis about less than 0.4 as snow depth varies, and the Kpcof combined slices is smaller than a single slice. © 2008-2012 IEEE.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5752
Appears in Collections:微波遥感部_期刊论文

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