Evaluation of Marine Wave Radar(Part I) : Fundamental Considerations and Numerical Generation of Radar Image

概要

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The knowledge of ocean waves is important not only for the design of floating structures but also for the improvement of the operation safety and efficiency of those structures. In this paper an evaluation of the conventional marine radar to measure ocean waves is done through numerical simulations. The radar system is simulated to create a typical PPI image with sea clutter information from a given ocean surface. In the simulation case shown here a simple empirical model of the radar cross-section (reflection coefficient) is used. The ocean surface patch used in the simulations was generated from a theoretical multi・directional power spectrum density distribution. In the literature many works that are able to extract the predominant direction of propagation of the ocean surface waves and the wavelength through direct two-dimensional spectral analysis of the PPI image are available. In this paper, the basic evaluation of the use of marine radar as a wave measurement device (marine wave radar) is done. Furthermore, using a simple model for the radar cross-section, this work attempts to retrieve from the PPI image the original multi・directional power spectrum used to create it.
社団法人日本船舶海洋工学会の論文