| 摘要 |
PROBLEM TO BE SOLVED: To dispense with radar reflected signals of many continuous scans, and to acquire wave information on the wavelength, the wave velocity, the wave direction, the wave height or the like, accurately from the radar reflected signals of continuous two scans in wave measurement by the radar. SOLUTION: A two-dimensional cross spectrum of radar data of two scans subjected respectively to two-dimensional Fourier transform is operated, and an amplitude spectrum and a phase spectrum of the two-dimensional cross spectrum are acquired. The amplitude spectrum and the phase spectrum of the two-dimensional cross spectrum are filtered based on a wave velocity relation. The wave information is calculated by using the filtered amplitude spectrum and phase spectrum of the two-dimensional cross spectrum. |
