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An Improved Semi-Empirical Model for Radar Backscattering from Rough Sea Surfaces at X-Band
- Source :
- Journal of the Korean Institute of Electromagnetic Engineering and Science, Vol 18, Iss 2, Pp 136-140 (2018)
- Publication Year :
- 2018
- Publisher :
- The Korean Institute of Electromagnetic Engineering and Science, 2018.
-
Abstract
- We propose an improved semi-empirical scattering model for X-band radar backscattering from rough sea surfaces. This new model has a wider validity range of wind speeds than does the existing semi-empirical sea spectrum (SESS) model. First, we retrieved the small-roughness parameters from the sea surfaces, which were numerically generated using the Pierson-Moskowitz spectrum and measurement datasets for various wind speeds. Then, we computed the backscattering coefficients of the small-roughness surfaces for various wind speeds using the integral equation method model. Finally, the large-roughness characteristics were taken into account by integrating the small-roughness backscattering coefficients multiplying them with the surface slope probability density function for all possible surface slopes. The new model includes a wind speed range below 3.46 m/s, which was not covered by the existing SESS model. The accuracy of the new model was verified with two measurement datasets for various wind speeds from 0.5 m/s to 14 m/s.
Details
- Language :
- English
- ISSN :
- 22348409 and 22348395
- Volume :
- 18
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of the Korean Institute of Electromagnetic Engineering and Science
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.015c037b9a4244e79ac4cc2fabbe66fa
- Document Type :
- article
- Full Text :
- https://doi.org/10.26866/jees.2018.18.2.136