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FIRST SHIPBORNE GNSS-R CAMPAIGN FOR RECEIVEING LOW ELEVATION ANGLE SEA SURFACE REFLECTED SIGNALS
Xia, Junming; Bai, Weihua; Zhao, Danyang; Sun, Yueqiang; Meng, Xiangguang; Liu, Congliang; Du, Qifei; Wang, Xianyi; Wang, Dongwei; Wu, Di; Wu, Chunjun; Liu, Cheng; Cai, Yuerong; Xia, JM (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China.
作者部门空间环境部
2016
会议名称36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
会议录名称2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
页码5613-5616
会议日期JUL 10-15, 2016
会议地点Beijing, PEOPLES R CHINA
ISSN号2153-6996
ISBN号978-1-5090-3332-4
摘要Global Navigation Satellite System Reflectometry (GNSS-R) was regarded as a promising way to observe atmospheric duct by utilizing low elevation angle ocean surface reflected signals. To invest the Delay maps' feature of low elevation angle reflected signals in the atmospheric duct, a shipborne GNSS-R campaign was conducted in July, 2015 by the scientific investigation ship called Shiyan 3 on the South China Sea. During the campaign, the atmospheric temperature, pressure, and relative humidity which were used to detect atmospheric duct were recorded by GPS radiosondes and meteorological recorder. The GNSS-R payload developed by National Space Science Center (NSSC) and fixed on the rail of Shiyan3 was used to generate Delay maps. Preliminary results showed that atmospheric duct, especially evaporation duct, existed almost all the time in the experimental ocean region. Ocean surface reflected signals with elevation angle less than 10 degrees were received and formed delay maps successfully. Affected by the direct signal and specular reflected signal's strong interference, apparent code correlation peaks appeared on Delay maps' tail. The experimental values of correlation peaks and simulated code autocorrelation were synthetically used to fit the curve of direct signal and specular reflected signal's strong interference utilizing the least square method. After removing the interference, cleaner reflected signals without direct and specular reflection signals were obtained.
关键词Gnss-r Receiver Delay Maps Atmospheric Duct Low Elevation Angle Gps Radiosonde
收录类别EI ; CPCI
语种英语
文献类型会议论文
条目标识符http://ir.nssc.ac.cn/handle/122/5758
专题空间环境部
通讯作者Xia, JM (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China.
推荐引用方式
GB/T 7714
Xia, Junming,Bai, Weihua,Zhao, Danyang,et al. FIRST SHIPBORNE GNSS-R CAMPAIGN FOR RECEIVEING LOW ELEVATION ANGLE SEA SURFACE REFLECTED SIGNALS[C],2016:5613-5616.
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