A Quality Control Method for Broad-Beam HF Radar Current Velocity Measurements

This paper describes a method to provide quality control for radial velocity maps derived from radar echo voltage cross spectra measured by broad-beam high frequency radars. The method involves the comparison of voltage cross spectra measured at Doppler frequencies in the Bragg region with values pr...

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Bibliographic Details
Published inJournal of marine science and engineering Vol. 7; no. 4; p. 112
Main Authors Barrick, Donald, Whelan, Chad
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.04.2019
Subjects
Antennas
Contamination
Control methods
Current velocity
current velocity measurement
Doppler sonar
Echoes
Electric potential
High frequency
high-frequency (HF) radar oceanography
Methods
Quality control
Radar
Radar cross sections
Radar echoes
Radar systems
Radial velocity
remote sensing
Software
Spectra
Velocity
Voltage
United States > US
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Summary:This paper describes a method to provide quality control for radial velocity maps derived from radar echo voltage cross spectra measured by broad-beam high frequency radars. The method involves the comparison of voltage cross spectra measured at Doppler frequencies in the Bragg region with values predicted from basic equations defining the complex voltage cross spectra in terms of the measured antenna patterns and the radar cross section. Poor agreement at a given Doppler frequency indicates contamination of the spectra, usually due to interference; velocity results from that Doppler frequency are then eliminated. Examples are given of its application to broad-beam radars operating at four sites.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse7040112