Abstract：The Doppler centroid analysis (DCA) method on estimating ocean surface current field which based on the space-borne synthetic aperture radar (SAR) is becoming mature gradually,but the method is complex in inversion process,and the value of Doppler shifts required corrections repeatedly. On the basis of DCA,Chapron et al. proposed the model among Doppler velocity,ocean current field and sea surface wind field. This paper combines M4S model,which is microwave imaging simulation of SAR,DCA method and Chaprons model,establishes the formula between the Doppler velocity and ocean surface flow velocity,and explains the calculate parameters of the formula with the linear programming. The inversion results are also given out at the same time. Compared with the DCA method,the proposed algorithm of this paper simplified the inversion procedure and reduced the calculation complexity,the error of the experimental results is no more than 0.06m/s,the flow error is no more than 1°.
FRIAS-LOPEZ J,THOMPSON A,WALDBAUER J,et al.Use of stable isotope-labelled cells to identify active grazers of picocyanobacteria in ocean surface waters[J].Environmental Microbiology,2009,11(2):512-525.
[5]
GOLDSTEIN R M,ZEBKER H A.Interferometric radar measurement of ocean surface currents[J].Nature,1987,328(6132):707-709.
[6]
GOLDSTEIN R M,ZEBKER H A,BARNETT T P.Remote sensing of ocean currents.[J].Science,1989,246(4935):1282-1285.
[7]
CHAPRON B,COLLARD F,ARDHUIN F.Direct measurements of ocean surface velocity from space:Interpretation and validation[J].Journal of Geophysical Research Oceans,2005,110(C7):691-706.
CHAPRON B,COLLARD F,ARDHUIN F.Direct measurements of ocean surface velocity from space:Interpretation and validation[J].Journal of Geophysical Research,2005,110(C7):691-706.
[10]
HANSEN M W,COLLARD F,DAGESTAD K,et al.Retrieval of sea surface range velocities from Envisat ASAR Doppler centroid measurements [J].IEEE Transactions on Geoscience & Remote Sensing,2011,49(10):3582-3592.
[11]
ROMEISER R,THOMPSON D R.Numerical study on the along-track interferometric radar imaging mechanism of oceanic surface currents[J].IEEE Transactions on Geoscience and Remote Sensing,2000,38(1):446-458.
[12]
THOMPSON D R,JENSEN J R.Synthetic aperture radar interferometry applied to ship-generated internal waves in the 1989 Loch Linnhe Experiment[J].Journal of Geophysical Research:Oceans (1978-2012),1993,98(C6):10259-10269.
[13]
JOHANNESSEN J A,CHAPRON B,COLLARD F,et al.Direct ocean surface velocity measurements from space:Improved quantitative interpretation of Envisat ASAR observations[J].Geophysical Research Letters,2008,35(22):113-130.
[14]
ALPERS W R,ROSS D B,RUFENACH C L.On the detectability of ocean surface waves by real and synthetic aperture radar[J].Journal of Geophysical Research,1981,86(C7):6481-6498.
[15]
CAUDAL G,HAUSER D.Directional spreading function of the sea wave spectrum at short scale,inferred from multifrequency radar observations[J].Journal of Geophysical Research,1996,101(C7):16601-16613.
[16]
MOLLER D,FRASIER S J.Radar-derived interferometric surface currents and their relationship to subsurface current structure[J].Journal of Geophysical Research ,1998,103(C6):12839-12852.
DULOV V A,KOSNIK M V.Effects of three-wave interactions in the gravity-capillary range of wind waves[J].Lzvestiya Atmospheric & Oceanic Physics,2009,45(3):380-391.
[19]
ROMEISER R,RUNGE H,SUCHANDT S,et al.Current measurements in rivers by spaceborne along-track in SAR[J].IEEE Transactions on Geoscience & Remote Sensing,2008,45(12):4019-4031.
2016, Vol. 33 
