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2 February 2023 Research on FY-4A cloud derived wind algorithm based on CLG optical flow method
Mo Li, Qirong Qiu
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Proceedings Volume 12462, Third International Symposium on Computer Engineering and Intelligent Communications (ISCEIC 2022); 1246232 (2023) https://doi.org/10.1117/12.2660787
Event: International Symposium on Computer Engineering and Intelligent Communications (ISCEIC 2022), 2022, Xi'an, China
Abstract
The nominal projection data of FY-4A satellite is used for cloud derived wind inversion. Firstly, the cloud image is radiometric calibrated and denoised by the median filter. Then the optical flow is solved by the CLG optical flow method combined with global and local and multi-resolution image deformation calculation technology. The real wind speed is obtained according to the optical flow value. Finally, the rationality of the algorithm is verified by radiosonde data. The results show that CLG optical flow algorithm can be used for the inversion of cloud derived wind, and the average deviation and root mean square error of wind speed at cloud height of 300-700hp are less than 5.5 m/s.
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Mo Li and Qirong Qiu "Research on FY-4A cloud derived wind algorithm based on CLG optical flow method", Proc. SPIE 12462, Third International Symposium on Computer Engineering and Intelligent Communications (ISCEIC 2022), 1246232 (2 February 2023); https://doi.org/10.1117/12.2660787
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KEYWORDS
Optical flow
Clouds
Satellites
Image processing
Algorithm development
Meteorological satellites
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