Real-Time Quality Control of Current Velocity Data on Individual Grid Cells in Wera Hf Radar
currents, ocean radar, quality control, remote sensing
Digital Object Identifier (DOI)
Ocean surface current data provided by shore-based High Frequency (HF) radar show sporadically non-realistic current vectors in some areas, particularly at the outer edges of the radar range. The present paper describes a quality control (QC) procedure which evaluates the data of an array-type HF radar system in near realtime and assigns a quality value on every single grid-cell measurement. The quality value can then be used to identify non-realistic measurements and remove them from the obtained current maps. This procedure was implemented on a pair of coastal radar systems of the University of South Florida during a measuring period of 9 months. It was observed that the method is very effective in removing occasional non-realistic measurements. In general, the WERA QC procedure has to be tuned to the specific local conditions of the system for optimal results and to have the right trade-off between correct outlier identification and false alarm rate according to the user requirements.
Was this content written or created while at USF?
Citation / Publisher Attribution
Presented at the OCEANS 2014 - TAIPEI in April 2014 in Taipei, Taiwan
Scholar Commons Citation
Gomez, Roberto; Helzel, Thomas; Peterson, Leif; Kniephoff, Matthias; Merz, Clifford R.; Liu, Yonggang; and Weisberg, Robert H., "Real-Time Quality Control of Current Velocity Data on Individual Grid Cells in Wera Hf Radar" (2014). Marine Science Faculty Publications. 291.