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题名: Interelement Phase Calibration for the Geostationary Interferometric Microwave Sounder (GIMS)
作者: Han, Donghao; Liu, Hao; Wu, Ji; Cheng, Zhang; Niu, Lijie; Zhang, Ying
作者部门: 微波遥感部
通讯作者: Han, DH (reprint author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China. ; Han, DH (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
关键词: Geostationary Interferometric Microwave Sounder (GIMS) ; interelement phase calibration ; phase error ; synthetic aperture radiometer
刊名: IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
ISSN号: 1545-598X
出版日期: 2016
卷号: 13, 期号:9, 页码:1216-1220
收录类别: SCI
英文摘要: The Geostationary Interferometric Microwave Sounder (GIMS) is a new concept of atmospheric microwave sounder for China's future geostationary Earth orbit meteorological satellite (FY-4). A novel self-calibration method for interferometric radiometers with a rotating thinned array, particularly for GIMS, has been proposed in this letter. Compared with the traditional relative phase calibration approach, neither dedicated hardware nor dedicated calibration working model is needed to achieve the relative phase calibration in this novel interelement phase calibration. The self-calibration approach is inherently merged with the nominal observation working model of GIMS, owing to the continuous array rotating of the GIMS instrument. A running average scheme has been introduced into the self-calibration approach to enhance the signal-to-noise ratio of the calibration data, which is normally very low with the natural earth scene. The method is demonstrated by both simulation and field imaging experiment.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5607
Appears in Collections:微波遥感部_期刊论文

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