| 题名: | INTER-ELEMENT PHASE SELF-CALIBRATION FOR GIMS (GEOSTATIONARY INTERFEROMETRIC MICROWAVE SOUNDER) |
| 作者: | Han, Donghao; Liu, Hao; Wu, Ji; Zhang, Cheng
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| 作者部门: | 微波遥感部
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| 通讯作者: | Han, DH (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Microwave Remote Sensing, Beijing 100190, CO, Peoples R China.
; Han, DH (reprint author), Univ Chinese Acad Sci, Beijing 100049, CO, Peoples R China.
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| 会议名称: | 36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
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| 会议日期: | JUL 10-15, 2016
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| 会议地点: | Beijing, PEOPLES R CHINA
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| 会议录: | 2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
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| 出版日期: | 2016
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| 收录类别: | CPCI
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| 页码: | 1874-1877
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| ISSN号: | 2153-6996
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| ISBN号: | 978-1-5090-3332-4
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| 关键词: | phase self-calibration
; Geostationary Interferometric Microwave Sounder (GIMS)
; phase error
; synthetic aperture
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| 英文摘要: | The inter-element phase calibration plays an important role in the overall calibration scheme for synthetic aperture radiometer. The traditional relative phase calibration approach is to use correlated noise injection network, which will be difficult to be implemented in millimeter wave band due to the complexity of the waveguide divider network. A novel self-calibration method for interferometric radiometers with rotating thinned array, especially for the geostationary interferometric microwave sounder(GIMS), has been proposed in this paper. By using this approach, neither dedicated hardware nor dedicated calibration working model is needed to achieved the relative phase calibration. The self-calibration approach is inherently merged with the nominal observation working model of GIMS, thanks to the continuous array rotating of GIMS instrument. A running average scheme has been introduced into the self-calibration approach to enhance the SNR 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
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| 内容类型: | 会议论文
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| URI标识: | http://ir.nssc.ac.cn/handle/122/5761
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| Appears in Collections: | 微波遥感部_会议论文
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