Spectral properties of radar return from the ocean surface according to a Bragg-based composite surface model

Research output: Contribution to conferencePaper

Abstract

Doppler spectra of the radar return from the ocean surface include information on the line-of-sight velocity of the scatterers and can thus be evaluated for direct measurements of surface currents and the orbital motions of long waves. However, experimental results obtained from along-track interferometric SAR (ATI) and Doppler scatterometry indicate that measured Doppler spectra can significantly deviate from first-order model predictions. We present an improved composite surface model for the computation of Doppler spectra which is based on Bragg scattering theory and includes contributions associated with the complete two-dimensional ocean wave spectrum. In addition to geometric effects, the asymmetric distribution of short ripple waves along longer waves due to hydrodynamic modulation is taken into account. We compare model results with scatterometer data, and we discuss the consequences of model predictions for wave and current measurements by scatterometer, SAR, and ATI.

Original languageEnglish (US)
Pages1875-1877
Number of pages3
StatePublished - Jan 1 1995
Externally publishedYes
EventProceedings of the 1995 International Geoscience and Remote Sensing Symposium. Part 3 (of 3) - Firenze, Italy
Duration: Jul 10 1995Jul 14 1995

Other

OtherProceedings of the 1995 International Geoscience and Remote Sensing Symposium. Part 3 (of 3)
CityFirenze, Italy
Period7/10/957/14/95

ASJC Scopus subject areas

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

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  • Cite this

    Romeiser, R. (1995). Spectral properties of radar return from the ocean surface according to a Bragg-based composite surface model. 1875-1877. Paper presented at Proceedings of the 1995 International Geoscience and Remote Sensing Symposium. Part 3 (of 3), Firenze, Italy, .