Dependence of the normalized radar cross section of water waves on Bragg wavelength-wind speed sensitivity

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Permanent URL	http://hdl.lib.byu.edu/1877/1038
Title	Dependence of the normalized radar cross section of water waves on Bragg wavelength-wind speed sensitivity
BYU Creator	Long, David G. Collyer, R. Scott Arnold, David V.
Keywords	atmospheric boundary layer; atmospheric techniques; backscatter; electromagnetic wave scattering; lakes; meteorological radar
Description/Abstract	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.
Source	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;
Publisher	IEEE
Date Original	1996-05
Language	English eng en
Publication Type	Peer-Reviewed Articles
Type	Text
Format	application/pdf
Owning Institution	Brigham Young University
BYU College	Ira A. Fulton College of Engineering and Technology
BYU Department	Electrical and Computer Engineering
Copyright Status	(c) 1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.;
Copyright Use Information	http://www.lib.byu.edu/generic_copyright.html

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Dependence of the normalized radar cross section of water waves on Bragg wavelength-wind speed sensitivity

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