Measurement of High and Low Waves Using Dual-Frequency Broad-Beam HF Radar

2014 ◽  
Vol 11 (9) ◽  
pp. 1599-1603 ◽  
Author(s):  
Yingwei Tian ◽  
Biyang Wen ◽  
Hao Zhou
Keyword(s):  
Hf Radar ◽  
Dual Frequency ◽  
Broad Beam

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

2019 ◽  
Vol 7 (4) ◽  
pp. 112 ◽  
Author(s):  
Lipa ◽  
Barrick ◽  
Whelan
Keyword(s):  
Quality Control ◽  
High Frequency ◽  
Control Method ◽  
Doppler Frequency ◽  
Hf Radar ◽  
Velocity Measurements ◽  
Poor Agreement ◽  
Broad Beam ◽  
Radar Echo ◽  
Basic Equations

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.

scholarly journals A New Method of Wave Mapping with HF Radar

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Lijie Jin ◽  
Biyang Wen ◽  
Hao Zhou
Keyword(s):  
Wave Height ◽  
Second Harmonic ◽  
Mapping Method ◽  
Hf Radar ◽  
Great Success ◽  
Broad Beam ◽  
Wave Measurements ◽  
Wave Inversion ◽  
Local Wave ◽  
Radar Wave

Study of wave height inversion with High-Frequency Surface Wave Radars (HFSWRs) has been going on for more than 40 years. Various wave inversion methods have been proposed, and HFSWRs have achieved great success in local wave measurements. However, the method of wave mapping is still under development, especially for the broad-beam HF radars. Existing methods of wave mapping are based on narrow-beam radar with beamforming. This paper introduces a way of wave height inversion, using the ratio of the second-harmonic peak (SHP) to the Bragg peak (RSB). A new wave mapping method is proposed, which can be used in both narrow and broad-beam radars, according to the way of wave inversion based on the RSB. In addition, radar wave measurements at the buoy position are compared with thein situbuoy, which show a good agreement. At last, the results of wave mapping on the two-hour timescale are given.

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