Doppler Shifts of Backscattering Fields from One Dimensional Linear and Nonlinear Oceanic Surface by SSA-II
WANG Yun-Hua1, ZHANG Yan-Min2, GUO Li-Xin3
1Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266003 2Department of Physics, Ocean University of China, Qingdao 266100 3School of Science, Xidian University, Xi'an 710071
Doppler Shifts of Backscattering Fields from One Dimensional Linear and Nonlinear Oceanic Surface by SSA-II
WANG Yun-Hua1, ZHANG Yan-Min2, GUO Li-Xin3
1Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266003 2Department of Physics, Ocean University of China, Qingdao 266100 3School of Science, Xidian University, Xi'an 710071
摘要Based on the general framework of the second order small slope approximation (SSA-II), Doppler shifts of backscattered fields from linear and nonlinear hydrodynamic sea surfaces are predicted. Comparisons are performed at incidence angles varying from near-nadir to moderate-grazing for different radar frequencies. The predicted Doppler shifts for nonlinear hydrodynamic model are somewhat larger than the results corresponding to linear surface. Meanwhile, the dependences of the Doppler shifts on the wind speed and radar polarizations are also analyzed, and the comparisons are shown to confirm the sensitivities to the polarization and wind speed. At the same time, the results of the small perturbation method (SPM) and geometrical optics approximation (GO) are also presented for comparisons.
Abstract：Based on the general framework of the second order small slope approximation (SSA-II), Doppler shifts of backscattered fields from linear and nonlinear hydrodynamic sea surfaces are predicted. Comparisons are performed at incidence angles varying from near-nadir to moderate-grazing for different radar frequencies. The predicted Doppler shifts for nonlinear hydrodynamic model are somewhat larger than the results corresponding to linear surface. Meanwhile, the dependences of the Doppler shifts on the wind speed and radar polarizations are also analyzed, and the comparisons are shown to confirm the sensitivities to the polarization and wind speed. At the same time, the results of the small perturbation method (SPM) and geometrical optics approximation (GO) are also presented for comparisons.
WANG Yun-Hua;ZHANG Yan-Min;GUO Li-Xin
. Doppler Shifts of Backscattering Fields from One Dimensional Linear and Nonlinear Oceanic Surface by SSA-II[J]. 中国物理快报, 2010, 27(10): 104101-104101.
WANG Yun-Hua, ZHANG Yan-Min, GUO Li-Xin
. Doppler Shifts of Backscattering Fields from One Dimensional Linear and Nonlinear Oceanic Surface by SSA-II. Chin. Phys. Lett., 2010, 27(10): 104101-104101.
[1] Zavorotny V U and Voronovich A G 1998 IEEE Trans. Antennas Propagat. 46 84
[2] Romeiser R and Thompson D R 2000 IEEE Trans. Geosci. Remote Sensing 38 446
[3] Mouche A A, Chapron B, Reul N and Collard F 2008 Waves in Random and Complex Media 18 185
[4] Barrick D E 1977 Remote Sensing Environ. 6 201
[5] Barrick D E 1977 Radio Sci. 12 415
[6] Lipa B J 1978 J. Geophys. Res. 83 959
[7] Wang Y H, Zhang Y M, and Guo L X 2010 Chin. Phys. B 19 074103
[8] Barrick D E and Weber B L 1977 J. Phys. Oceanogr. 7 11
[9] Creamer D B, Henyey F, Schult R and Wright J 1989 J. Fluid Mech. 205 135
[10] Voronovich A G and Zavorotny V U 2001 Waves in Random Media 11 247
[11] Longuet-Higgins M S 1963 J. Fluid Mech. 17 459
[12] Chen K S, Fung A K and Weissman D E 1992 IEEE Trans. Geosci. Remote Sensing 30 811
[13] Hisaki Y and Tokuda M 1995 J. Oceanogr. 51 385
[14] Johnson J T, Toporkov J V, and Brown G S 2001 IEEE Trans. Geosci. Remote Sensing 39 2411
[15] Toporkov J V and Brown G S 2000 IEEE Trans. Geosci. Remote Sensing 38 1616
[16] Chapron B, Collard F and Ardhuin F 2005 J. Geophys. Res. 110 C07008
2010, Vol. 27 
