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题名: FIRST SHIPBORNE GNSS-R CAMPAIGN FOR RECEIVEING LOW ELEVATION ANGLE SEA SURFACE REFLECTED SIGNALS
作者: 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
作者部门: 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. ; Xia, JM (reprint author), Beijing Key Lab Space Environm Explorat, Beijing 100190, Peoples R China.
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
会议录: 2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
出版日期: 2016
收录类别: CPCI
页码: 5613-5616
ISSN号: 2153-6996
ISBN号: 978-1-5090-3332-4
关键词: GNSS-R receiver ; Delay maps ; atmospheric duct ; low elevation angle ; GPS radiosonde
英文摘要: 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.
语种: 英语
内容类型: 会议论文
URI标识: http://ir.nssc.ac.cn/handle/122/5758
Appears in Collections:空间环境部_会议论文

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