DocumentCode :
1047481
Title :
Line broadening on HF ocean surface radar backscatter spectra
Author :
Heron, Malcolm L.
Author_Institution :
Physics Dept., James Cook Univ., Townsville, Qld., Australia
Volume :
10
Issue :
4
fYear :
1985
fDate :
10/1/1985 12:00:00 AM
Firstpage :
397
Lastpage :
401
Abstract :
Experimental results from an array of moored current meters and an HF ocean surface radar support the idea that line broadening on the radar spectra is caused by the velocity distribution within the radar target cell. The experiment was done in the wake of a small island where the velocity variations were severe. An estimate is made of the line broadening which can be expected. In a turbulent flow with dissipation rate of the order \\epsilon \\sim 10^{-10}m^{2}s^{-3} and target cell size 1 3000 m, the line broadening is \\Delta f \\sim 10^{-3} Hz. This would be resolved with a radar time series of \\sim 20 min and indicates that the HF ocean surface radar technique has potential in the observation of surface velocity distributions.
Keywords :
HF radar; Sea surface electromagnetic scattering; Australia; Backscatter; Electromagnetic scattering; Hafnium; Helium; Oceans; Radar antennas; Sea surface; Spread spectrum radar; Surface waves;
fLanguage :
English
Journal_Title :
Oceanic Engineering, IEEE Journal of
Publisher :
ieee
ISSN :
0364-9059
Type :
jour
DOI :
10.1109/JOE.1985.1145128
Filename :
1145128
Link To Document :
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