合成孔径雷达资料反演海面风场的正则化方法研究

姜祝辉; 黄思训; 何然; 周晨腾

doi:10.7498/aps.60.068401

摘要

针对基于散射计地球物理模型函数的合成孔径雷达资料反演海面风场中背景风向存在很大误差的问题,提出了利用正则化方法反演海面风场,并通过L曲线准则对正则化参数进行最优选择,然后对该方法进行仿真试验.试验结果显示,正则化方法反演海面风场的风速和风向的反演精度均优于变分同化方法,分析不同真实风向情况下的反演精度表明,真实风向在45°和135°附近时,风速反演的精度高,真实风向在0°和90°时,风向反演的精度高,这种现象与地球物理模型函数中后向散射截面相对于风向的导数相关.

关键词:

Abstract

Due to the fact that the error exists in the priori wind direction for the problem of synthetic aperture radar data sea surface wind field retrieval, the regularization method is used to retrieve the wind field, while the L-curve method is adopted to select the optimal regularization parameter. Simulation experiments show that the retrieval accuracy of the regularization method is better than that of the variational method. Further researches in different true wind direction situations indicate that when the real wind direction is in the vicinity of 45 ° or 135 °, the wind speed retrieval accuracy is higher, when the real wind direction is in the vicinity of 0 ° or 90 °, the wind direction retrieval accuracy is higher, this phenomenon may be related to the derivative of backscatter cross section with respect to the wind direction in geophysical model function.

Keywords:

作者及机构信息

1.
解放军理工大学气象学院,南京 211101

基金项目: 国家自然科学基金(批准号: 40775023)资助的课题.

Authors and contacts

1.
Institute of Meteorology, University of Science and Technology of Chinese People’s Liberation Army, Nanjing 211101, China

参考文献

[1]	Zecchetto S, Biasio D 2008 IEEE Trans. Geosci. Remote Sens. 46 2983
[2]	Monaldo F, Thompson D R, Pichel W G, Clemente C P 2004 IEEE Trans. Geosci. Remote Sens. 42 283
[3]	Wolfgang K 2004 IEEE Trans. Geosci. Remote Sens. 42 702
[4]	Gladeston C L, Ushizima D M, Medeiros N S, Lima G G 2010 Sensors 10 5994
[5]	Choisnard J, Laroche S 2008 J. Geophys. Res. 113 C05006
[6]	Portabella M, Stoffelen A, Johannessen J A 2002 J. Geophys. Res. 107 3086
[7]	Portabella M 2002 Ph. D. Dissertation (Barcelona: University of Barcelona)
[8]	Walker N, Woodhouse I H, Cameron I D 2007 Proceedings of International Geoscience Remote Sensing Symposium (Barcelona: IEEE) p3273
[9]	Quilfen Y, Chapron B, Elfouhaily T M, Katsaros K, Tournadre J 1998 J. Geophys. Res. 103 7767
[10]	Stoffelen A, Anderson D 1997 J. Geophys. Res. 102 5767
[11]	Hersbach H, Stoffelen A, Haan S D 2007 J. Geophys. Res. 112 C03006
[12]	Kalnay E 2005 Atmospheric Modeling, Data Assimilation and Predictability (Beijing: China Meteorological Press)p141 (in Chinese)
[13]	Cardinali C, Pezzulli S, Andersson E 2004 Quart. J. R. Meteorol. Soc. 130 2767
[14]	Tikhonov A N 1963 Soviet Math. Dokl. 5 1035
[15]	Huang S X, Wu R S 2005 Mathematical and Physical Problem in Atmospheric Science (Beijing: China Meteorological Press) p422 (in Chinese) [黄思训、伍荣生 2005 大气科学中的数学物理问题 (北京: 气象出版社) 第422页]
[16]	Jiang Z H, Huang S X, Du H D, Liu B 2010 Acta Phys. Sin. 59 8968 (in Chinese) [姜祝辉、黄思训、杜华栋、刘博 2010 物理学报 59 8968]
[17]	Cai Q F, Huang S X, Gao S T, Zhong K, Li Z Q 2008 Acta Phys. Sin. 57 3912 (in Chinese) [蔡其发、黄思训、高守亭、钟科、李自强 2008 物理学报 57 3912]
[18]	Sheng Z, Huang S X 2010 Acta Phys. Sin. 59 1738 (in Chinese) [盛峥、黄思训2010 物理学报 59 1738]
[19]	Sheng Z, Huang S X 2010 Acta Phys. Sin. 59 3912 (in Chinese) [盛峥、黄思训 2010 物理学报 59 3912]
[20]	Engl H W, Grever W 1994 Numer. Math. 69 25
[21]	Hansen P C, O’Leary D P 2003 SIAM J. Sci. Comput. 14 1487

施引文献

[1]	Zecchetto S, Biasio D 2008 IEEE Trans. Geosci. Remote Sens. 46 2983
[2]	Monaldo F, Thompson D R, Pichel W G, Clemente C P 2004 IEEE Trans. Geosci. Remote Sens. 42 283
[3]	Wolfgang K 2004 IEEE Trans. Geosci. Remote Sens. 42 702
[4]	Gladeston C L, Ushizima D M, Medeiros N S, Lima G G 2010 Sensors 10 5994
[5]	Choisnard J, Laroche S 2008 J. Geophys. Res. 113 C05006
[6]	Portabella M, Stoffelen A, Johannessen J A 2002 J. Geophys. Res. 107 3086
[7]	Portabella M 2002 Ph. D. Dissertation (Barcelona: University of Barcelona)
[8]	Walker N, Woodhouse I H, Cameron I D 2007 Proceedings of International Geoscience Remote Sensing Symposium (Barcelona: IEEE) p3273
[9]	Quilfen Y, Chapron B, Elfouhaily T M, Katsaros K, Tournadre J 1998 J. Geophys. Res. 103 7767
[10]	Stoffelen A, Anderson D 1997 J. Geophys. Res. 102 5767
[11]	Hersbach H, Stoffelen A, Haan S D 2007 J. Geophys. Res. 112 C03006
[12]	Kalnay E 2005 Atmospheric Modeling, Data Assimilation and Predictability (Beijing: China Meteorological Press)p141 (in Chinese)
[13]	Cardinali C, Pezzulli S, Andersson E 2004 Quart. J. R. Meteorol. Soc. 130 2767
[14]	Tikhonov A N 1963 Soviet Math. Dokl. 5 1035
[15]	Huang S X, Wu R S 2005 Mathematical and Physical Problem in Atmospheric Science (Beijing: China Meteorological Press) p422 (in Chinese) [黄思训、伍荣生 2005 大气科学中的数学物理问题 (北京: 气象出版社) 第422页]
[16]	Jiang Z H, Huang S X, Du H D, Liu B 2010 Acta Phys. Sin. 59 8968 (in Chinese) [姜祝辉、黄思训、杜华栋、刘博 2010 物理学报 59 8968]
[17]	Cai Q F, Huang S X, Gao S T, Zhong K, Li Z Q 2008 Acta Phys. Sin. 57 3912 (in Chinese) [蔡其发、黄思训、高守亭、钟科、李自强 2008 物理学报 57 3912]
[18]	Sheng Z, Huang S X 2010 Acta Phys. Sin. 59 1738 (in Chinese) [盛峥、黄思训2010 物理学报 59 1738]
[19]	Sheng Z, Huang S X 2010 Acta Phys. Sin. 59 3912 (in Chinese) [盛峥、黄思训 2010 物理学报 59 3912]
[20]	Engl H W, Grever W 1994 Numer. Math. 69 25
[21]	Hansen P C, O’Leary D P 2003 SIAM J. Sci. Comput. 14 1487

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