• Barrick, D. E., 1972: First-order theory and analysis of MF/HF/VHF scatter from the sea. IEEE Trans. Antennas Propag., 20, 210.

  • Barrick, D. E., 1977: Extraction of wave parameters from measured HF radar sea-echo Doppler spectra. Radio Sci., 12, 415424.

  • Barrick, D. E., and Weber B. L. , 1977: On the nonlinear theory for gravity waves on the ocean's surface. Part II: Interpretation and application. J. Phys. Oceanogr., 7, 1121.

    • Search Google Scholar
    • Export Citation
  • Chavanne, C., Janeković I. , Flament P. , Poulain P.-M. , Kuzmić M. , and Gurgel K.-W. , 2007: Tidal currents in the northwestern Adriatic: High-frequency radio observation and numerical model predictions. J. Geophys. Res., 112, C03S21, doi:10.1029/2006JC003523.

    • Search Google Scholar
    • Export Citation
  • Chen, Z., Chen Z. , Yanni J. , and Wenli H. , 2011: Wave measurements with multi-frequency HF radar in the East China Sea. J. Electromagn. Waves Appl., 25, 10311043.

    • Search Google Scholar
    • Export Citation
  • Cochin, V., Mariette V. , and Garello R. , 2008: Sea surface current–wave–wind interactions measured by coastal ground wave HF radars. IEEE Geosci. Remote Sens. Lett., 5, 227230.

    • Search Google Scholar
    • Export Citation
  • Green, J. J., and Wyatt L. R. , 2006: Row-action inversion of the Barrick–Weber equations. J. Atmos. Oceanic Technol., 23, 501510.

  • Gurgel, K.-W., Essen H.-H. , and Schlick T. , 2006: An empirical method to derive ocean waves from second-order Bragg scattering: Prospects and limitations. IEEE J. Oceanic Eng., 31, 804811.

    • Search Google Scholar
    • Export Citation
  • Haus, B. K., Shay L. K. , Work P. A. , Vovlgaris G. , Ramos R. J. , and Martinez-Pedraja J. , 2010: Wind speed dependence of single-site wave-height retrievals from high-frequency radars. J. Atmos. Oceanic Technol., 27, 13811394.

    • Search Google Scholar
    • Export Citation
  • Heron, M. L., and Heron S. F. , 2001: Cumulative probability noise analysis in geophysical spectral records. Int. J. Remote Sens., 22, 25372544.

    • Search Google Scholar
    • Export Citation
  • Heron, M. L., and Prytz A. , 2002: Wave height and wind direction from the HF coastal ocean surface radar. Can. J. Remote Sens., 28, 385393.

    • Search Google Scholar
    • Export Citation
  • Heron, S. F., and Heron M. L. , 1998: A comparison of algorithms for extracting significant wave height from HF radar ocean backscatter spectra. J. Atmos. Oceanic Technol., 15, 11571163.

    • Search Google Scholar
    • Export Citation
  • Hisaki, Y., 1996: Nonlinear inversion of the integral equation to estimate ocean wave spectra from HF radar. Radio Sci., 31, 2539.

  • Hisaki, Y., 2007: Directional distribution of the short wave estimated from HF ocean radars. J. Geophys. Res., 112, C10014, doi:10.1029/2007JC004296.

    • Search Google Scholar
    • Export Citation
  • Hisaki, Y., 2009: Quality control of surface wave data estimated from low signal-to-noise ratio HF radar Doppler spectra. J. Atmos. Oceanic Technol., 26, 24442461.

    • Search Google Scholar
    • Export Citation
  • Howell, R., and Walsh J. , 1993: Measurement of ocean wave spectra using narrow-beam HF radar. IEEE J. Oceanic Eng., 18, 296305.

  • Lipa, B. J., 1977: Derivation of directional ocean-wave spectra by inversion of second order radar echoes. Radio Sci., 12, 425434.

  • Lipa, B. J., and Barrick D. E. , 1986: Extraction of sea state from HF radar sea echo: Mathematical theory and modelling. Radio Sci., 21, 81100.

    • Search Google Scholar
    • Export Citation
  • Lipa, B. J., and Nyden B. , 2005: Directional wave information from the SeaSonde. IEEE J. Oceanic Eng., 30, 221231.

  • Lipa, B. J., Nyden B. , Barrick D. E. , and Kohut J. , 2008: HF radar sea-echo from shallow water. Sensors, 8, 46114635.

  • Liu, Y., Weisberg R. H. , Merz C. R. , Lichtenwalner S. , and Kirkpatrick G. J. , 2010: HF radar performance in a low-energy environment CODAR SeaSonde experience on the West Florida Shelf. J. Atmos. Oceanic Technol., 27, 16891710.

    • Search Google Scholar
    • Export Citation
  • Long, R. M., Barrick D. , Largier J. L. , and Garfield N. , 2011: Wave observations from central California: SeaSonde systems and in situ wave buoys. J. Sens., 2011, 728936, doi:10.1155/2011/728936.

    • Search Google Scholar
    • Export Citation
  • Maresca, J. W., Jr., and Georges T. M. , 1980: Measuring rms wave height and the scalar ocean wave spectrum with HF skywave radar. J. Geophys. Res., 85 (C5), 27592771.

    • Search Google Scholar
    • Export Citation
  • Ramos, R., Graber H. C. , and Haus B. K. , 2009: Observation of wave energy evolution in coastal areas using HF radar. J. Atmos. Oceanic Technol., 26, 18911909.

    • Search Google Scholar
    • Export Citation
  • Shay, L. K., Martinez-Pedraja J. , Cook T. M. , and Haus B. K. , 2007: High-frequency radar mapping of surface currents using WERA. J. Atmos. Oceanic Technol., 24, 484503.

    • Search Google Scholar
    • Export Citation
  • Teague, C. C., 1986: Multifrequency HF radar observations of currents and current shears. IEEE J. Oceanic Eng., 11, 258269.

  • Teague, C. C., Zachariah J. F. , and Hallock R. , 2001: A comparison of multifrequency HF radar and ADCP measurements of near-surface currents during COPE-3. IEEE J. Oceanic Eng., 26, 399405.

    • Search Google Scholar
    • Export Citation
  • Weber, B. L., and Barrick D. E. , 1977: On the nonlinear theory for gravity waves on the ocean's surface. Part I: Derivations. J. Phys. Oceanogr., 7, 310.

    • Search Google Scholar
    • Export Citation
  • Wyatt, L. R., 1986: The measurement of the ocean wave directional spectrum from HF radar Doppler spectra. Radio Sci., 21, 473485.

  • Wyatt, L. R., 1988: Significant waveheight measurement with H.F. radar. Int. J. Remote Sens., 9, 10871095.

  • Wyatt, L. R., 2002: An evaluation of wave parameters measured using a single HF radar system. Can. J. Remote Sens., 28, 205218.

  • Wyatt, L. R., 2012: Shortwave direction and spreading measured with HF radar. J. Atmos. Oceanic Technol., 29, 286299.

  • Wyatt, L. R., and Green J. J. , 2009: Measuring high and low waves with HF radar. Proc. Oceans '09, Bremen, Germany, IEEE, 090108-009, doi:10.1109/OCEANSE.2009.5278328.

  • Wyatt, L. R., Liakhovetski G. , Graber H. C. , and Haus B. K. , 2005: Factors affecting the accuracy of SHOWEX HF radar wave measurements. J. Atmos. Oceanic Technol., 22, 847859.

    • Search Google Scholar
    • Export Citation
  • Wyatt, L. R., Green J. J. , Middleditch A. , Moorhead M. D. , Howarth J. , Holt M. , and Keogh S. , 2006: Operational wave, current, and wind measurements with the Pisces HF radar. IEEE J. Oceanic Eng., 31, 819834.

    • Search Google Scholar
    • Export Citation
  • Wyatt, L. R., Green J. J. , and Middleditch A. , 2009: Signal sampling impacts on HF radar wave measurement. J. Atmos. Oceanic Technol., 26, 793805.

    • Search Google Scholar
    • Export Citation
  • Wyatt, L. R., Green J. J. , and Middleditch A. , 2011: HF radar data quality requirements for wave measurement. Coastal Eng., 58, 327336.

    • Search Google Scholar
    • Export Citation
  • Zhao, C., Zezong C. , and Chao X. , 2008: Design of LXI bus interface for high-frequency ground wave radar based on ARM. Proc. Fourth Int. Conf. on Wireless Communications, Networking and Mobile Computing, Shanghai, China, IEEE, 4 pp., doi:10.1109/WiCom.2008.551.

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Exploration and Validation of Wave-Height Measurement Using Multifrequency HF Radar

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  • 1 School of Electronic Information, Wuhan University, Wuhan, China
  • | 2 Department of Electronic Engineering, Navy University of Engineering, Wuhan, China
  • | 3 School of Electronic Information, Wuhan University, Wuhan, China
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Abstract

For operations across a wide range of oceanographic conditions, a radar system able to operate at more than one frequency is theoretically and experimentally recommended for robust wave measurement in recent years. To obtain more sea-state information by HF radar, a multifrequency HF (MHF) radar system, which can simultaneously operate at four frequencies at most in the band of 7.5–25 MHz, was developed by the Radio Wave Propagation Laboratory of Wuhan University in 2007. This paper mostly focuses on detailing the data process method of MHF radar wave-height estimation. According to different bands of operating frequencies, a least-mean-square (LMS) linear fitting method is adopted to calibrate wave-height estimation formulation, which is introduced by Barrick to extract significant wave height from backscatter Doppler spectra. Both the wave-height measurements of the initial and modified methods are compared with wave buoy measurements. Afterward, a data fusion algorithm of multifrequency estimates based on relevant factors quantification is discussed step by step. Three comparisons between radar-derived and buoy-measured estimates are presented to illustrate the performance of the MHF radar wave-height measurement. The statistics of the MHF radar wave-height measurements are listed and analyzed. The results show that the wave-height measurements of the MHF radar are in reasonable agreement with the measurements of the wave buoy.

Corresponding author address: Chen Zezong, School of Electronic Information, Wuhan University, Luojia Hill, Wuchang District, Wuhan, Hubei 430072, China. E-mail: chenzz@whu.edu.cn

Abstract

For operations across a wide range of oceanographic conditions, a radar system able to operate at more than one frequency is theoretically and experimentally recommended for robust wave measurement in recent years. To obtain more sea-state information by HF radar, a multifrequency HF (MHF) radar system, which can simultaneously operate at four frequencies at most in the band of 7.5–25 MHz, was developed by the Radio Wave Propagation Laboratory of Wuhan University in 2007. This paper mostly focuses on detailing the data process method of MHF radar wave-height estimation. According to different bands of operating frequencies, a least-mean-square (LMS) linear fitting method is adopted to calibrate wave-height estimation formulation, which is introduced by Barrick to extract significant wave height from backscatter Doppler spectra. Both the wave-height measurements of the initial and modified methods are compared with wave buoy measurements. Afterward, a data fusion algorithm of multifrequency estimates based on relevant factors quantification is discussed step by step. Three comparisons between radar-derived and buoy-measured estimates are presented to illustrate the performance of the MHF radar wave-height measurement. The statistics of the MHF radar wave-height measurements are listed and analyzed. The results show that the wave-height measurements of the MHF radar are in reasonable agreement with the measurements of the wave buoy.

Corresponding author address: Chen Zezong, School of Electronic Information, Wuhan University, Luojia Hill, Wuchang District, Wuhan, Hubei 430072, China. E-mail: chenzz@whu.edu.cn
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