Title :
High-frequency radar measurements of the ocean wave-directional spectrum
Author_Institution :
Dept. of Appl. & Comput. Math., Sheffield Univ., UK
fDate :
1/1/1991 12:00:00 AM
Abstract :
Measurements of the ocean wave directional spectrum using a dual, high-frequency (HF) radar system are presented. A model-fitting technique is used to obtain wave measurements from the radar Doppler spectra. Over 100 h of data, collected NURWEC2 (Netherlands-UK Radar Wavebuoy Experimental Comparison), have been compared with measurements using a WAVEC directional wave buoy. The amplitude and directional characteristics of long-wave components at frequencies of 0.07-0.1 Hz in general show good agreement. Reasonable estimates of the directional spectrum across the whole frequency range are obtained when the assumptions of the model-fitting technique are appropriate. Remaining problems in radar measurement and difficulties in assessing accuracy are discussed
Keywords :
Doppler effect; ocean waves; oceanographic techniques; remote sensing by radar; spectral analysis; 0.07 to 0.1 Hz; 100 km; NURWEC2; WAVEC directional wave buoy; amplitude; directional characteristics; dual HF radar; dual radar; model-fitting; ocean wave-directional spectrum; radar Doppler spectra; radar measurements; wave measurements; Current measurement; Doppler radar; Frequency estimation; Hafnium; Hardware; Helium; Interference; Ocean waves; Radar measurements; Sea measurements;
Journal_Title :
Oceanic Engineering, IEEE Journal of
