volume | PIER Journals

Abstract

HF radar in ocean remote sensing makes use of electromagnetic waves of 10m to 100m wavelength from the rough sea surface to measure surface current and ocean wave parameter. Recently, a new time division multiple frequency HF radar system called OSMAR2009 has been developed by the Wuhan University. One main advantage of the system is that it is of great help in extracting current parameters and significant wave height. A further advantage is the ability to avoid interference. In addition, this technique offers the opportunity to measure the current shear. These advantages are gained by transmitting time division multiple frequency chirp instead of one frequency chirp. This paper introduces the technical design and the advantage of OSMAR2009 and describes the remote sensing experiment implemented in East China sea during 2009, followed by the field results and the brief analysis of such results.

1. Liang, D., P. Xu, L. Tsang, Z. Gui, and K.-S. Chen, "Electromagnetic scattering by rough surfaces with large heights and slopes with applications to microwave remote sensing of rough surface over layered media," Progress In Electromagnetics Research, Vol. 95, 199-218, 2009.
doi:10.2528/PIER09071413 Google Scholar

2. Wu, Z.-S., J.-J. Zhang, and L. Zhao, "Composite electromagnetic scattering from the plate target above a one-dimensional sea surface: Taking the diffraction into account," Progress In Electromagnetics Research, Vol. 92, 317-331, 2009.
doi:10.2528/PIER09032902 Google Scholar

3. Chen, H., M. Zhang, D. Nie, and H.-C. Yin, "Robust semi-deterministic facet model for fast estimation on EM scattering from ocean-like surface ," Progress In Electromagnetics Research B, Vol. 18, 347-363, 2009.
doi:10.2528/PIERB09100508 Google Scholar

4. Yang, S., H. Ke, X. Wu, J. Tian, and J. Hou, "HF radar ocean current algorithm based on MUSIC and the validation experiments," IEEE Journal of Oceanic Engineering, Vol. 30, No. 3, 601-617, 2005.
doi:10.1109/JOE.2005.858370 Google Scholar

5. Teague, C. C., J. F. Vesecky, and Z. R. Hallock, "A comparison of multifrequency HF radar and ADCP measurements of near-surface currents during COPE-3," IEEE J. of Oceanic Eng., Vol. 26, No. 3, 399-405, July 2001.
doi:10.1109/48.946513 Google Scholar

6. Zhang, X., G. Feng, and D. Xu, "Blind direction of angle and time delay estimation algorithm for uniform linear array employing multi-invariance MUSIC," Progress In Electromagnetics Research Letters, Vol. 13, 11-20, 2010.
doi:10.2528/PIERL09102611 Google Scholar

7. Mau, J.-C., D.-P. Wang, D. S. Ullman, and D. L. Codiga, "Comparison of observed (HF radar, ADCP) and model barotropic tidal currents in the New York bight and block island sound ," Estuarine, Coastal and Shelf Science, Vol. 72, 129-137, 2007.
doi:10.1016/j.ecss.2006.10.011 Google Scholar

8. Son, Y.-T., S.-H. Lee, C.-S. Kim, J. C. Lee, and G.-H. Lee, "Surface current variability in the Keum River Estuary (South Korea) during summer 2002 as observed by high-frequency radar and coastal monitoring buoy," Continental Shelf Research, Vol. 27, 43-63, 2007.
doi:10.1016/j.csr.2006.08.008 Google Scholar

9. Mau, J.-C., D.-P. Wang, D. S. Ullman, et al. "Model of the long island sound outflow: Comparison with year-long HF radar and doppler current observation," Continental Shelf Research, Vol. 28, 1791-1799, 2008.
doi:10.1016/j.csr.2008.04.013 Google Scholar

10. Barrick, D. E., "Dependence of second-order sidebands in HF sea echo upon sea state ," IEEE G-AP Int. Symp. Digest., 194-197, 1971. Google Scholar

11. Howell, R. and J. Walsh, "Measurement of ocean wave spectra using narrow-beam HF radar," IEEE J. Oceanic Eng., Vol. 18, 296-305, 1993.
doi:10.1109/JOE.1993.236368 Google Scholar

12. Green, J. J., "Discretising Barrick's equations," Proceedings of Wind over Waves II: Forecasting and Fundamentals of Applications, 219-232, S. G. Sajjadi and J. C. R. Hunt (eds.), IMA and Horwood, 2003. Google Scholar

13. Green, J. J. and L. R. Wyatt, "Row-action inversion of the Barrick-Weber equations," American Meteorological Society, March, 2006. Google Scholar

14. Essen, H. H., K. W. Gurgel, and T. Schlick, "On the accuracy of current measurements by means of HF radar," IEEE J. Oceanic Eng., Vol. 25, 472-480, 2000.
doi:10.1109/48.895354 Google Scholar

15. Emery, B. M., L. Washburn, and J. A. Harlan, "Evaluating radial current measurements from CODAR high-frequency radars with moored current meters," J. Atmos. Ocean. Technol., Vol. 21, 1259-1271, 2004.
doi:10.1175/1520-0426(2004)021<1259:ERCMFC>2.0.CO;2 Google Scholar

16. Shay, L. K., J. Martinez-Pedraja, T. M. Cook, and B. K. Haus, "High-frequency radar mapping of surface currents using WERA," J. Atmos. Ocean. Technol., Vol. 24, 484-503, 2007.
doi:10.1175/JTECH1985.1 Google Scholar

17. Poulain, P. M., R. Gerin, E. Mauri, and R. Pennel, "Wind effects on drogued and undrogued drifters in the eastern mediterranean," J. Atmos. Oceanic Technol., Vol. 26, 1144-1156, 2009.
doi:10.1175/2008JTECHO618.1 Google Scholar

Dr. Songhua Yan

Dr. Xiongbin Wu

Dr. Zezong Chen