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Joint retrieval of wind and current using airborne Doppler scatterometer
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Wencheng Zhao1, Wenming Lin2, 3, *, Yijun He2, 3, Qingliu Bao4
Haiyang Xuebao | 2023, 45(12) : 112 - 120
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Haiyang Xuebao | 2023, 45(12): 112-120
• Article •
Joint retrieval of wind and current using airborne Doppler scatterometer
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Wencheng Zhao1, Wenming Lin2, 3, *, Yijun He2, 3, Qingliu Bao4
Affiliations
  • 1School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • 2School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • 3Key Laboratory of Space Ocean Remote Sensing and Application, Ministry of Natural Resources, Beijing 100081, China
  • 4Piesat Information Technology Co., Ltd., Bejing 100195, China
Published: 2023-12-31 doi: 10.12284/hyxb2023169
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Doppler scatterometer is able to measure radar backscattering coefficient and Doppler frequency over sea surface, such that it can be used to retrieve sea surface wind and sea surface current simultaneously. This paper performs a study on the joint wind and current retrieval based on the observation data from an airborne Doppler scatterometer, which results are compared with those of independent retrieval. The results indicate that the accuracy of sea surface current is significantly improved by introducing the radar backscattering coefficients into the joint inversion method, however, the accuracy of the retrieved wind field from the joint inversion method is slightly lower than that of the independent wind inversion, compared to the European Centre for Medium-Range Weather Forecasts winds. This implies that the Doppler information has little influence on the wind retrieval, while the radar backscattering coefficients (the wind) have a remarkable impact on the sea surface current retrieval. The joint inversion algorithm can mitigates the effects of sea surface wind for the current retrieval. The results of this study provide a new insight to the interplay between wind inversion and current retrieval, and also provide a reference for the data processing of spaceborne Doppler scatterometer.

Doppler scatterometer  /  sea surface wind  /  sea surface current  /  joint inversion
Wencheng Zhao, Wenming Lin, Yijun He, Qingliu Bao. Joint retrieval of wind and current using airborne Doppler scatterometer[J]. Haiyang Xuebao, 2023 , 45 (12) : 112 -120 . DOI: 10.12284/hyxb2023169
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Article Info
doi: 10.12284/hyxb2023169
  • Receive Date：2023-09-21
  • Online Date：2025-12-28
  • Published：2023-12-31
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History
  • Received：2023-09-21
  • Revised：2023-10-29
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Affiliations
    1School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
    2School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China
    3Key Laboratory of Space Ocean Remote Sensing and Application, Ministry of Natural Resources, Beijing 100081, China
    4Piesat Information Technology Co., Ltd., Bejing 100195, China
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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