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Volume 30 Issue 3
Dec.  2010
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Yu Ying, Chen Yong-qiang, Zhu Min-hui. The Study on the Ocean Echo Signal Coherent Time of Bistatic SAR[J]. Journal of Electronics & Information Technology, 2008, 30(3): 564-568. doi: 10.3724/SP.J.1146.2006.01287
Citation: Yu Ying, Chen Yong-qiang, Zhu Min-hui. The Study on the Ocean Echo Signal Coherent Time of Bistatic SAR[J]. Journal of Electronics & Information Technology, 2008, 30(3): 564-568. doi: 10.3724/SP.J.1146.2006.01287

The Study on the Ocean Echo Signal Coherent Time of Bistatic SAR

doi: 10.3724/SP.J.1146.2006.01287 cstr: 32379.14.SP.J.1146.2006.01287
  • Received Date: 2006-09-01
  • Rev Recd Date: 2007-01-02
  • Publish Date: 2008-03-19
  • The coherent time of echo signal of ocean surface is much different from that of land because of its stochastic movement, which is related to the system parameters designation. The ocean echo signal coherent time of bistatic SAR is studied in this paper. The echo signal phase due to the wave movement is analyzed, and the effect on the bistatic SAR imaging of the ocean wave stochastic movement is given. The formula of coherent time is given, the relationship between the azimuth resolution and the coherent time is given, and the relationships between the coherent time and some factors are simulated and analyzed.
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  • Fung A K. Microwave Scatttering and Emission Models andTheir Applicantions. Boston, London, Artech House, 1994,Ch. 4.[2]Kasilingam D P and Shemdin O H. Theory for syntheticaperture radar imaging of the ocean surface with applicationto tower ocean wave and radar dependence experiment onfocus, resolution, and wave height spectra. J Geophis. Res.C.1988, 93(11): 13837-13848.[3]Jackson F C and Lyzenga D R. Microwave techniques formeasuring directional wave spectra. in Surface Waves andFluxes, Geernhaert G L and Plant W J, Eds. Amsterdam,The Netherland, Kluwer, 1990, Vol. 2, ch.14, 221-264.[4]Carande R E. Estimating ocean coherence time usingdual-baseline interferometric synthetic aperture radar. IEEETrans. on G R S. 1994, 32(4): 846-854.[5]Frasier S J and Camps A J. Dual-beam interferometry forocean surface current vector mapping[J].IEEE Trans. on G R S.2001, 39(2):401-414[6]Romeiser R, Alpers W, and Wismann V. An improvedcomposite surface model for the radar backscattering crosssection of the ocean surface, 1. Theory of the model andoptimization / validation by scatterometer data. J Geophys.Res., 1997, 102(11): 25237-25250.[7]Romeiser R and Alpers W. An improved composite surfacemodel for the radar backscattering cross section of the oceansurface, 2. Model response to surface roughness variationsand the radar imaging of underwater bottom topography. JGeophys. Res. C., 1997, 102: 25251-25267.[8]Plant W J. A stochastic multiscale model of microwavebackscatter. J Geophys. Res. C., 2002, 107(9): 3120.
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