INTER-ELEMENT PHASE SELF-CALIBRATION FOR GIMS (GEOSTATIONARY INTERFEROMETRIC MICROWAVE SOUNDER)

	INTER-ELEMENT PHASE SELF-CALIBRATION FOR GIMS (GEOSTATIONARY INTERFEROMETRIC MICROWAVE SOUNDER)
	Han, Donghao; Liu, Hao; Wu, Ji; Zhang, Cheng
	2016
会议名称	36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
会议日期	JUL 10-15, 2016
会议地点	Beijing, PEOPLES R CHINA
关键词	phase self-calibration Geostationary Interferometric Microwave Sounder (GIMS) phase error synthetic aperture
页码	1874-1877
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.
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.
收录类别	CPCI
会议录	2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
语种	英语
ISSN号	2153-6996
ISBN号	978-1-5090-3332-4
内容类型	会议论文
源URL	[http://ir.nssc.ac.cn/handle/122/5761]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	Han, Donghao,Liu, Hao,Wu, Ji,et al. INTER-ELEMENT PHASE SELF-CALIBRATION FOR GIMS (GEOSTATIONARY INTERFEROMETRIC MICROWAVE SOUNDER)[C]. 见:36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS). Beijing, PEOPLES R CHINA. JUL 10-15, 2016.