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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
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Volume 4, issue 4
Nonlin. Processes Geophys., 4, 213–222, 1997
https://doi.org/10.5194/npg-4-213-1997
© Author(s) 1997. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Nonlin. Processes Geophys., 4, 213–222, 1997
https://doi.org/10.5194/npg-4-213-1997
© Author(s) 1997. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  31 Dec 1997

31 Dec 1997

A fractal model for the sea state bias in radar altimetry

D. E. Bar and Y. Agnon D. E. Bar and Y. Agnon
  • Department of Mathematics, Technion, Haifa 32000, Israel
  • Cicil Engineering, Technion, Haifa 32000, Israel

Abstract. The Kirchhoff approximation is used to determine the sea state bias in radar altimetry. A weakly nonlinear model of the sea waves is used to derive the joint moments of two different points separated by a distance R; the bias moment is formulated, and found for power law spectra. The method provides a consistent analysis of the sea state bias and avoids the need to truncate the high frequency tail of power-law wave spectra. The model exhibits dependence of the "electromagnetic bias" on the radar frequency, an effect observed in field experiments.

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