### Abstract

A calibrated composite surface model for the calculation of absolute normalized radar backscattering cross sections (NRCS) of the ocean surface is presented. The model is based on a Taylor expansion of the NRCS, as given by Bragg scattering theory, up to second order in the surface slope. Measured NRCS values for a variety of radar frequencies, polarizations, incidence angles, azimuthal radar look directions, and wind speeds can be well reproduced after some reasonable tuning of the input ocean wave spectrum. The model can thus be considered as an advanced wind scatterometer model based on physical principles. Due to this fact it is also well suited for general applications like the calculation of NRCS variations associated with distortions of the wave spectrum in the presence of surface current gradients.

Original language | English (US) |
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Title of host publication | International Geoscience and Remote Sensing Symposium (IGARSS) |

Publisher | IEEE |

Pages | 597-599 |

Number of pages | 3 |

Volume | 1 |

State | Published - 1996 |

Externally published | Yes |

Event | Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4) - Lincoln, NE, USA Duration: May 28 1996 → May 31 1996 |

### Other

Other | Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4) |
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City | Lincoln, NE, USA |

Period | 5/28/96 → 5/31/96 |

### Fingerprint

### ASJC Scopus subject areas

- Software
- Geology

### Cite this

*International Geoscience and Remote Sensing Symposium (IGARSS)*(Vol. 1, pp. 597-599). IEEE.

**Optimization of a composite surface model for the radar backscattering cross section of the ocean surface as measured by wind scatterometers.** / Romeiser, Roland.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*International Geoscience and Remote Sensing Symposium (IGARSS).*vol. 1, IEEE, pp. 597-599, Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, IGARSS'96. Part 1 (of 4), Lincoln, NE, USA, 5/28/96.

}

TY - GEN

T1 - Optimization of a composite surface model for the radar backscattering cross section of the ocean surface as measured by wind scatterometers

AU - Romeiser, Roland

PY - 1996

Y1 - 1996

N2 - A calibrated composite surface model for the calculation of absolute normalized radar backscattering cross sections (NRCS) of the ocean surface is presented. The model is based on a Taylor expansion of the NRCS, as given by Bragg scattering theory, up to second order in the surface slope. Measured NRCS values for a variety of radar frequencies, polarizations, incidence angles, azimuthal radar look directions, and wind speeds can be well reproduced after some reasonable tuning of the input ocean wave spectrum. The model can thus be considered as an advanced wind scatterometer model based on physical principles. Due to this fact it is also well suited for general applications like the calculation of NRCS variations associated with distortions of the wave spectrum in the presence of surface current gradients.

AB - A calibrated composite surface model for the calculation of absolute normalized radar backscattering cross sections (NRCS) of the ocean surface is presented. The model is based on a Taylor expansion of the NRCS, as given by Bragg scattering theory, up to second order in the surface slope. Measured NRCS values for a variety of radar frequencies, polarizations, incidence angles, azimuthal radar look directions, and wind speeds can be well reproduced after some reasonable tuning of the input ocean wave spectrum. The model can thus be considered as an advanced wind scatterometer model based on physical principles. Due to this fact it is also well suited for general applications like the calculation of NRCS variations associated with distortions of the wave spectrum in the presence of surface current gradients.

UR - http://www.scopus.com/inward/record.url?scp=0029699670&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029699670&partnerID=8YFLogxK

M3 - Conference contribution

VL - 1

SP - 597

EP - 599

BT - International Geoscience and Remote Sensing Symposium (IGARSS)

PB - IEEE

ER -