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Data Analysis of Long-Term Applicability Test for Surface Currents by HF Surface Wave Radar
Author(s): 
Pages: 23-29
Year: Issue:  1
Journal: Ocean Technology

Keyword:  HF Surface Wave Radarlong-term experimentsurface currentsdetection depth of ocean currents;
Abstract: In order to evaluate the capability of current measurement, verification tests of the OSMAR071 HF surface wave radar system against in-situ measurements had been conducted during Jan 29 to Mar 15, 2013. The comprehensive evaluation includes that(1) effective sampling rate and space coverage;(2) the depth of the current measured by radar; and(3) the precision of the currents measured by radar in different areas. The longterm verification suggests that the radar system can effectively retrieve the temporal and spatial variation of surface currents in the effective detection area. The error of the retrieved currents is relatively small, with a root mean square error(RMS) of 7.5-19.3 cm/s(speed) and 15.5-33.7°(direction) in high precision area, 7.5-10.1cm/s and 15.5-28.5° in the core area within the high precision area, and 16.1-25.8 cm/s and 39.5-40.7° in other areas, which is comparable to the actual observing accuracy of similar products at home and overseas.
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