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Development of HF radar inversion algorithm for spectrum estimation (HIAS)
Author(s) -
Hisaki Yukiharu
Publication year - 2015
Publication title -
journal of geophysical research: oceans
Language(s) - English
Resource type - Journals
eISSN - 2169-9291
pISSN - 2169-9275
DOI - 10.1002/2014jc010548
Subject(s) - radar , spectral line , doppler effect , wave radar , inversion (geology) , remote sensing , algorithm , doppler radar , geology , continuous wave radar , geodesy , acoustics , computer science , physics , radar imaging , telecommunications , seismology , tectonics , astronomy
A method for estimating ocean wave directional spectra using an HF (high‐frequency) ocean radar was developed. This method represents the development of work conducted in previous studies. In the present method, ocean wave directional spectra are estimated on polar coordinates whose center is the radar position, while spectra are estimated on regular grids. This method can be applied to both single and multiple radar cases. The area for wave estimation is more flexible than that of the previous method. As the signal to noise (SN) ratios of Doppler spectra are critical for wave estimation, we develop a method to exclude low SN ratio Doppler spectra. The validity of the method is demonstrated by comparing results with in situ observed wave data that it would be impossible to estimate by the methods of other groups.