On the measurement of the dispersion relation by a radar and the implication on the current retrieval

• DOI: 10.48550/arxiv.2303.12181
• Publication Date: 2023-01-01
• Authors: Susanne Støle-Hen...; Benjamin K. Smeltzer; Yaron Toledo
• Keywords: Realization (probability); Wavenumber; Root mean square; Dispersion relation

The work analyses the error in current retrievals from images of marine radars. study is based on simulations waves interacting with a shear current. measured dispersion related to underlying wavenumber-dependent effective highest tested radar antenna (H=45 m) vertical polarization performed best. For that case root mean square was at most 0.05 m/s above one for simulated wave field without imaging mechanism. observation time 20 minutes compared shorter windows. Depending needed accuracy, may be reduced five minutes, associated an loss accuracy below 12%. shows reconstruction depends shape profile and varies considerably realization