DOI: 10.1002/2013GL058725
论文题名: Sea surface topography retrieved from GNSS reflectometry phase data of the GEOHALO flight mission
作者: Semmling A.M. ; Beckheinrich J. ; Wickert J. ; Beyerle G. ; Schön S. ; Fabra F. ; Pflug H. ; He K. ; Schwabe J. ; Scheinert M.
刊名: Geophysical Research Letters
ISSN: 0094-10385
EISSN: 1944-10116
出版年: 2014
卷: 41, 期: 3 起始页码: 954
结束页码: 960
语种: 英语
英文关键词: GNSS reflectometry
; sea surface topography
Scopus关键词: Air navigation
; Fighter aircraft
; Global positioning system
; Reflection
; Reflectometers
; Sea level
; Signal processing
; Surface roughness
; Surface waters
; Topography
; Elevation angle
; Flight mission
; Geoid undulation
; Global Navigation Satellite Systems
; Mediterranean sea
; Reflectometry
; Spatial resolution
; Topography models
; Surface topography
; data set
; eddy covariance
; GNSS
; numerical model
; polarization
; sea level
; sea surface topography
; spatial resolution
; Mediterranean Sea
英文摘要: Sea surface topography observations are deduced from an airborne reflectometry experiment. A GNSS (Global Navigation Satellite System) receiver dedicated for reflectometry was set up aboard the German HALO (High Altitude Long Range) research aircraft. Flights were conducted over the Mediterranean Sea about 3500 m above sea level. A signal path model divided into large- and small-scale contributions is used for phase altimetry. The results depict geoid undulations and resolve anomalies of the sea surface topography. For the whole experiment 65 tracks over the Mediterranean Sea are retrieved and compared with a topography model. Tracks differ between right-handed and left-handed circular polarization. The difference, however, is not significant for this study. Precision and spatial resolution decrease disproportionately at low elevations. Eight tracks with centimeter precision are obtained between 11° and 33° of elevation. At higher elevation angles the number of tracks is significantly reduced due to surface roughness. In future such retrievals could contribute to ocean eddy detection. Key Points Altimetric retrieval depicts geoid undulations of the Mediterranean Sea Residuals resolve the sea surface topography with centimeter precision Synergies with other techniques (radar altimeter) arise ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893636488&doi=10.1002%2f2013GL058725&partnerID=40&md5=7ec3c81cd3618f3a90152625bd2e1cad
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7649
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geodesy and Remote Sensing, Deutsches GeoForschungs, Zentrum Potsdam, Germany
Recommended Citation:
Semmling A.M.,Beckheinrich J.,Wickert J.,et al. Sea surface topography retrieved from GNSS reflectometry phase data of the GEOHALO flight mission[J]. Geophysical Research Letters,2014-01-01,41(3).