Measurement of ocean surface waves by HF radars using a direction finding
H.-H. ESSEN, K.-W. GURGEL and T. SCHLICK
IGARSS'2000 Conference, Proceedings pp. 2943...2945, 2000.
Abstract - -
HF radars are capable of measuring surface currents and ocean waves.
Existing algorithms for wave retrieval make use of the second-order side
bands of the HF Doppler spectrum. However, the resolution of side bands
requires an array of receive antennas which permits the application of
beamforming techniques. Here, we present an empircal method which relies
on the correlation between the standard deviation of the HF Doppler peaks
and the significant waveheight weighted by an azimuthal function. Using data
of two radar sites the significant waveheight and the mean wave direction can
be retrieved. This method is applied to HF measurements performed with
a direction finding array.
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