NSSC OpenIR  > 空间环境部
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.
Department空间环境部
Source Publication2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
2016
Pages5613-5616
Language英语
ISSN2153-6996
ISBN978-1-5090-3332-4
AbstractGlobal 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.
KeywordGnss-r Receiver Delay Maps Atmospheric Duct Low Elevation Angle Gps Radiosonde
Conference Name36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Conference DateJUL 10-15, 2016
Conference PlaceBeijing, PEOPLES R CHINA
Indexed ByEI ; CPCI
Document Type会议论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5758
Collection空间环境部
Corresponding AuthorXia, JM (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China.
Recommended Citation
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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