W-band radar measurements of laboratory water waves

摘要

The paper presents results on millimetre wave radar backscatteringfrom laboratory water waves. Firstly, in a linear wave-tank, the radarhas sensed mechanically generated surface waves of varying frequency (1to 4 Hz) and amplitude (0.5 to 10 cm). Finally, in a 13 m diameterwave-tank, scaled versions of particular internal wave phenomena havebeen set-up under mechanically generated surface waves, and theresulting wave-field has been sensed by the radar in SAR mode. Bothseries of experiments have been carried out at the Laboratoire desEcoulements Geophysiques et Industriels, Grenoble, France, within the ECproject Mesoscale Ocean Radar Signature Experiments. First, the role ofthe radar and its operating mode are briefly presented, and theexperiments are described. Then, the paper focuses on the data analysisand draws some conclusions on the backscattering mechanisms