Abstract
Analyzing and fitting the HY-2 satellite data by least square method (LSM), a multi-parameter polynomial regression model of retrieving ocean surface wind speed for HY-2 altimeter is presented in this paper. Its accuracy is about 0.157m/s when a single parameter of Ku band backscattering coefficient (σ Ku 0) is introduced into the polynomial model, while the retrieval wind speed accuracy can be greatly improved when the polynomial model includes C band backscattering coefficient (σ C 0) and significant wave height (SWH), in addition to Ku band SWH and σ Ku 0. The multi-parameter polynomial model based on LSM can be suitable for retrieving wind speed for HY-2 altimeter. The accuracy is good and acceptable.
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