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为实现高度计风速与辐射计风速的融合, 采用Kriging插值方法将辐射计风速插值到高度计路径得到高度计风速观测算子, 建立高度计风速与辐射计风速融合的代价函数; 利用变分方法求解分析风速, 得出融合结果. 分别在仅高度计风速有误差、 仅辐射计风速有误差和两者都有误差的情况下开展了模拟试验, 结果表明变分融合结果更接近于理想风速, 尤其在高度计路径上更为明显. 选取Jason-1高度计第241周期风速资料和与其时空匹配的国防气象卫星计划 F17上所搭载的专用传感器微波成像仪辐射计风速资料开展了实例试验, 结果表明融合后的结果更加接近于浮标观测结果, 证实了变分融合方法的有效性. 经统计, 上述高度计和辐射计资料有60%时空匹配, 开展风速融合有重要的理论及应用价值. 该变分融合方法可应用于我国海洋二号卫星所载高度计与辐射计风速反演结果的融合.In order to realize the fusion of altimeter wind speed and radiometer wind speed, the Kriging method is used to interpolate radiometer wind speed to the altimeter path to obtain the altimeter wind speed observation operator, a cost function is established, and then the variational method is adopted to construct and analyze wind speed and derive fusion results. Simulation tests are carried out when only altimeter wind speed contains error, only radiometer wind speed contains error, both altimeter and radiometer wind speed contain error. The results show that through the variational fusion, the accuracy is improved, especially in the altimeter path. The Jason-1 altimeter cycle 241 wind speed data and spatial temporally matched Special Sensor Microwave Imager Sounder wind speed data (carried by Defense Meteorological Satellite Program F17) are selected to carry out the real test, and the results show that the fused wind speed is more close to the buoy observation, so it is confirmed that the variational fusion method is effective, statics shows that 60% altimeter and radiometer data matched, which means that fusion is an important theory and has application value. The variational fusion method can be applied to the fusion of HY-2 satellite altimeter and radiometer wind inversion results.
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Keywords:
- altimeter /
- radiometer /
- wind speed /
- fusion
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[2] Jiang Z H, Huang S X, Liu G 2011 Marine Sci. Bull. 30 588 (in Chinese) [姜祝辉, 黄思训, 刘刚 2011海洋通报 30 588]
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[4] Atlas R 2010 IEEE International Geoscience and Remote Sensing Symposium Honolulu, USA, July 25-30, 2010 p3538
[5] Jacques S, Francis G, Alain M 1993 J. Atmos. Ocean Tech. 10 880
[6] Ruchi K, Deo M C 2007 Coastal Eng. 54 187
[7] 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 59 8968]
[8] Qi Y L, Lin M S 2012 Spacecraft Engineering 21 117 (in Chinese) [齐亚琳, 林明森 2012 航天器工程 21 117]
[9] Atlas R, Hoffman R N, Ardizzone J, Leidner M, Jusem J C 2008 IEEE International Geoscience and Remote Sensing Symposium Boston, USA, July 6-11, 2008 pI-106
[10] Portabella M, Stoffelen A, Johannessen J A 2002J. Geophys. Res. 107 3086
[11] Ding L, Weng F, Chen Y, Zhu T 2012 IEEE International Geoscience and Remote Sensing Symposium Munich, Germany, July 22-27, 2012 p875
[12] Sun N, Weng F 2008 IEEE Trans. Geosci. Remote Sens. 46 1006
[13] Hirotaka S, Sean A M, Zimmerman D A, Timothy C C 2005 Stoch. Environ. Res. Risk Assess. 19 71
[14] 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
[15] Jouhaud J C, Sagaut P, Labeyrie B 2006 J. Fluids Eng. 128 847
[16] Li J, Huang S X 2001 Sci. China D 31 70 (in Chinese) [李俊, 黄思训2001 中国科学D 31 70]
[17] Huang S X, Wu R S 2001 Methods of Mathematical Physics in Atmospheric Science (Beijing: China Meteorological Press) p422 (in Chinese) [黄思训, 伍荣生2001 大气科学中的数学物理问题(北京: 气象出版社) 第422 页]
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[1] Zieger S, Vinoth J, Young I R 2009 J. Atmos. Ocean Tech. 26 2549
[2] Jiang Z H, Huang S X, Liu G 2011 Marine Sci. Bull. 30 588 (in Chinese) [姜祝辉, 黄思训, 刘刚 2011海洋通报 30 588]
[3] Witter D L, Chelton D B 1991 J. Geophys. Res. 96 8853
[4] Atlas R 2010 IEEE International Geoscience and Remote Sensing Symposium Honolulu, USA, July 25-30, 2010 p3538
[5] Jacques S, Francis G, Alain M 1993 J. Atmos. Ocean Tech. 10 880
[6] Ruchi K, Deo M C 2007 Coastal Eng. 54 187
[7] 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 59 8968]
[8] Qi Y L, Lin M S 2012 Spacecraft Engineering 21 117 (in Chinese) [齐亚琳, 林明森 2012 航天器工程 21 117]
[9] Atlas R, Hoffman R N, Ardizzone J, Leidner M, Jusem J C 2008 IEEE International Geoscience and Remote Sensing Symposium Boston, USA, July 6-11, 2008 pI-106
[10] Portabella M, Stoffelen A, Johannessen J A 2002J. Geophys. Res. 107 3086
[11] Ding L, Weng F, Chen Y, Zhu T 2012 IEEE International Geoscience and Remote Sensing Symposium Munich, Germany, July 22-27, 2012 p875
[12] Sun N, Weng F 2008 IEEE Trans. Geosci. Remote Sens. 46 1006
[13] Hirotaka S, Sean A M, Zimmerman D A, Timothy C C 2005 Stoch. Environ. Res. Risk Assess. 19 71
[14] 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
[15] Jouhaud J C, Sagaut P, Labeyrie B 2006 J. Fluids Eng. 128 847
[16] Li J, Huang S X 2001 Sci. China D 31 70 (in Chinese) [李俊, 黄思训2001 中国科学D 31 70]
[17] Huang S X, Wu R S 2001 Methods of Mathematical Physics in Atmospheric Science (Beijing: China Meteorological Press) p422 (in Chinese) [黄思训, 伍荣生2001 大气科学中的数学物理问题(北京: 气象出版社) 第422 页]
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