atmospheric boundary layer, atmospheric techniques, backscatter, electromagnetic wave scattering, lakes, meteorological radar
Measurements of the normalized radar cross section (O) made by the YSCAT ultrawideband scatterometer during an extended deployment on the Canada Centre for Inland Waters (CCIW) Research Tower located at Lake Ontario are analyzed and compared with anemometer wind measurements to study the sensitivity of O to the wind speed as a function of the Bragg wavelength. This paper concentrates on upwind and downwind azimuth angles in the wind speed range of 4.5-12 m/s. While YSCAT collected measurements of O at a variety of frequencies and incidence angles, this paper focuses on frequencies of 2.0, 3.05, 5.30, 10.02, and 14.0 GHz and incidence angles within the Bragg regime, 30-50°. Adopting a power law model to describe the relationship between O and wind speed, both wind speed exponents and upwind/downwind (u/d) ratios of O are found using least squares linear regression. The analysis of the wind speed exponents and u/d ratios show that shorter Bragg wavelengths < 4 cm) are the most sensitive to wind speed and direction. Additionally, vertical polarization (V-pol) O is shown to be more sensitive to wind speed than horizontal polarization (H-pol), while the H-pol u/d ratio is larger than the V-pol u/d ratio.
Original Publication Citation
Long, D. G., R. S. Collyer, and D. V. Arnold. "Dependence of the Normalized Radar Cross Section of Water Waves on Bragg Wavelength-Wind Speed Sensitivity." Geoscience and Remote Sensing, IEEE Transactions on 34.3 (1996): 656-66
BYU ScholarsArchive Citation
Long, David G.; Collyer, R. Scott; and Arnold, David V., "Dependence of the normalized radar cross section of water waves on Bragg wavelength-wind speed sensitivity" (1996). All Faculty Publications. 678.
Ira A. Fulton College of Engineering and Technology
Electrical and Computer Engineering
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