Estimation of the Significant Wave Height from Marine Radar Images Without External Reference
Journal of marine science and engineering(2019)
摘要
In the context of the sea state monitoring by means of the X-band marine radar, the estimation of a significant wave height (H-s) is, currently, one of the most challenging tasks. For its estimation, a calibration is usually required using an external reference, such as in situ sensors, and mainly buoys. In this paper, a method that allows us to avoid the need for an external reference for H-s estimation is presented. This strategy is, mainly, based on the correlation between a raw radar image and the corresponding non-calibrated wave elevation image to which varying its amplitude by using a scale factor creates a mathematical model for the radar imaging. The proposed strategy has been validated by considering a simulated waves field, generated at varying sea state conditions. The results show a good estimation of the significant wave height, confirmed by a squared correlation coefficient greater than 0.70 for each considered sea state.
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关键词
significant wave height,marine radar,sea state monitoring
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