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An ocean surface wind direction retrieval method from multi-polarization airborne synthetic aperture radar images is presented in order to retrieve high precision wind direction SAR image and improve the accuracy of ocean surface wind. The method relies on the ability of two-dimensional (2D) continuous wavelet technique with better time-frequency than Fourier transform and local gradient, which combines 2D continuous wavelet and FFT to exact the ocean surface wind direction from airborne SAR images. The proposed method is executed by using several kinds of mother wavelet functions for the C-band co-polarization and cross-polarization airborne sounding images, and the retrieved ocean surface wind direction is compared with NCEP data and buoy data. The verification results show that the wavelet based ocean surface wind direction retrieval algorithm is suited to retrieve wind direction from airborne SAR sounding data. The choice of mother wavelet function has a certain influence on the results, and 2D Mexican-Hat is the best mother wavelet for wind retrieval. Both co-polarization and cross-polarization airborne sounding images are suited to retrieve ocean wind direction.
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Keywords:
- airborne SAR /
- ocean surface wind /
- wavelet /
- multi-polarization
[1] Lin H, Xu Q, Zheng Q 2008 Prog. Nat. Sci. 18 913
[2] Zecchetto S, Biasio D 2008 IEEE Trans. Geosci. Remote Sens. 46 2983
[3] Horstmann J, Koch W, Lehner S, Tonboe R 2000 IEEE Trans. Geosci. Remote Sens. 38 2122
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[6] Cameron I, Lumsdon P, Walker N, Woodhouse I 2006 In Proceedings of SEASAR: Advances in SAR Oceanography from ENVISAT and ERS Missions Frascati, Italy, January 23-26, 2006 p1
[7] Yang J S 2005 SAR Remote Sensing Techniques of Sea Surface Wind, Surface Wave and Internal Wave (Beijing: Ocean Press) pp31-32(in Chinese) [杨劲松 2005 合成孔径雷达海面风场、海浪和海洋内波遥感技术(北京:海洋出版社) 第31—32页]
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[9] Levy G 1998 Proc. Int. Geosci. Remote Sens. Symp. 1437
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[11] Ynag J S, Huang W G, Zhou C B 2001 J. Remote Sens. 5 13 (in Chinese) [杨劲松, 黄韦艮, 周长宝 2001 遥感学报 5 13]
[12] Wolfgang K 2004 IEEE Trans. Geosci. Remote Sens. 42 702
[13] Jiang Z H, Huang S X, Shi H Q, Zhang W, Wang B 2011 Acta Phys. Sin. 60 108402 (in Chinese) [姜祝辉, 黄思训, 石汉青, 张伟, 王彪 2011 60 108402]
[14] Jiang Z H, Huang S X, He R, Zhou C T 2011 Acta Phys. Sin. 60 068401 (in Chinese) [姜祝辉, 黄思训, 何然, 周晨腾 2011 60 068401]
[15] Zhang R W, Yan W, Ai W H, Ma S 2011 J. Mircowaves 27 79 (in Chinese) [张日伟, 严卫, 艾未华, 马烁 2011 微波学报 27 79]
[16] Kong Y, Zhao X B, Ai W H, Han D, Xue J 2011 J. PLA Univ. Sci. Tech. 12 301 (in Chinese) [孔毅, 赵现斌, 艾未华, 韩丁, 薛剑 2011 解放军理工大学学报 12 301]
[17] Gladeston C L, Daniela M U, Fátima N S 2010 Sensors 10 5994
[18] Zhu H B, Wen B Y, Huang J 2005 J. Wuhan Univ. 51 375 (in Chinese) [朱华波, 文必洋, 黄坚 2005 武汉大学学报 51 375]
[19] Almeida L B 1994 IEEE Trans. Signal Proc. 42 3084
[20] Kutter M, Bhattacharjee S K, Ebrahimi T 1999 Proceedings of IEEE International Conference Image Processing Japan, Kobe, October 25-28, 1999 p320
[21] Merete B C, Wolfgang K, Horstmann J 2006 Remote Sens. Environ. 105 68
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[1] Lin H, Xu Q, Zheng Q 2008 Prog. Nat. Sci. 18 913
[2] Zecchetto S, Biasio D 2008 IEEE Trans. Geosci. Remote Sens. 46 2983
[3] Horstmann J, Koch W, Lehner S, Tonboe R 2000 IEEE Trans. Geosci. Remote Sens. 38 2122
[4] Thompson D R, Beal R C 2000 Johns Hopkins APL Tech. Dig. 21 58
[5] Monaldo F 2000 Johns Hopkins APL Tech. Dig. 21 75
[6] Cameron I, Lumsdon P, Walker N, Woodhouse I 2006 In Proceedings of SEASAR: Advances in SAR Oceanography from ENVISAT and ERS Missions Frascati, Italy, January 23-26, 2006 p1
[7] Yang J S 2005 SAR Remote Sensing Techniques of Sea Surface Wind, Surface Wave and Internal Wave (Beijing: Ocean Press) pp31-32(in Chinese) [杨劲松 2005 合成孔径雷达海面风场、海浪和海洋内波遥感技术(北京:海洋出版社) 第31—32页]
[8] Apel J R 1994 J. Geophys. Res. 99 16269
[9] Levy G 1998 Proc. Int. Geosci. Remote Sens. Symp. 1437
[10] Vachon P W, Dobson F W 1996 The Global Atmosphere and Ocean System 5 177
[11] Ynag J S, Huang W G, Zhou C B 2001 J. Remote Sens. 5 13 (in Chinese) [杨劲松, 黄韦艮, 周长宝 2001 遥感学报 5 13]
[12] Wolfgang K 2004 IEEE Trans. Geosci. Remote Sens. 42 702
[13] Jiang Z H, Huang S X, Shi H Q, Zhang W, Wang B 2011 Acta Phys. Sin. 60 108402 (in Chinese) [姜祝辉, 黄思训, 石汉青, 张伟, 王彪 2011 60 108402]
[14] Jiang Z H, Huang S X, He R, Zhou C T 2011 Acta Phys. Sin. 60 068401 (in Chinese) [姜祝辉, 黄思训, 何然, 周晨腾 2011 60 068401]
[15] Zhang R W, Yan W, Ai W H, Ma S 2011 J. Mircowaves 27 79 (in Chinese) [张日伟, 严卫, 艾未华, 马烁 2011 微波学报 27 79]
[16] Kong Y, Zhao X B, Ai W H, Han D, Xue J 2011 J. PLA Univ. Sci. Tech. 12 301 (in Chinese) [孔毅, 赵现斌, 艾未华, 韩丁, 薛剑 2011 解放军理工大学学报 12 301]
[17] Gladeston C L, Daniela M U, Fátima N S 2010 Sensors 10 5994
[18] Zhu H B, Wen B Y, Huang J 2005 J. Wuhan Univ. 51 375 (in Chinese) [朱华波, 文必洋, 黄坚 2005 武汉大学学报 51 375]
[19] Almeida L B 1994 IEEE Trans. Signal Proc. 42 3084
[20] Kutter M, Bhattacharjee S K, Ebrahimi T 1999 Proceedings of IEEE International Conference Image Processing Japan, Kobe, October 25-28, 1999 p320
[21] Merete B C, Wolfgang K, Horstmann J 2006 Remote Sens. Environ. 105 68
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