Quantitative analysis of radar signatures of underwater bottom topography according to a Bragg-based composite surface model

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Abstract

We have recently developed a calibrated composite surface model for the calculation of normalized radar backscattering cross sections (NRCS) of the ocean surface. Using an optimized parameterization of the waveheight spectrum, the measured dependence of the mean NRCS on radar parameters and on the wind speed vector is reproduced quite well. In this paper the sensitivity of the NRCS to intensity variations of different wave spectral components is analyzed, and theoretical radar signatures associated with spatial surface roughness variations over underwater bottom topography in tidal waters are investigated. The composite surface model yields comparable radar signatures at high (10 GHz, X band) and low (1 GHz, L band) radar frequencies. However, measured NRCS variations at high radar frequencies appear to be still underestimated in some cases. Possible reasons and further improvements of the theory are discussed.

Original languageEnglish (US)
Pages1962-1964
Number of pages3
StatePublished - Jan 1 1996
Externally publishedYes
EventProceedings of the 1996 International Geoscience and Remote Sensing Symposium. Part 3 (of 4) - Lincoln, NE, USA
Duration: May 28 1996May 31 1996

Other

OtherProceedings of the 1996 International Geoscience and Remote Sensing Symposium. Part 3 (of 4)
CityLincoln, NE, USA
Period5/28/965/31/96

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ASJC Scopus subject areas

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

Cite this

Romeiser, R. (1996). Quantitative analysis of radar signatures of underwater bottom topography according to a Bragg-based composite surface model. 1962-1964. Paper presented at Proceedings of the 1996 International Geoscience and Remote Sensing Symposium. Part 3 (of 4), Lincoln, NE, USA, .