基于便携式高频地波雷达风场的反演

Inversion of wind field based on portable HFSWR

针对天线口径小、便携式雷达系统具有很宽的波束,大大增加了远距离处海面风和浪参数反演难度的问题,导出了有效浪高与风速之间的经验关系,结合改进后的风向反演算法,即可实现海面风场的获取,而不需要任何先验信息实现远距离风速的反演.风场中同时包含了风速和风向信息,为了验证风场的可靠性,将多个浮标的数据与风场数据进行比对.结果表明：风速比对的相关系数均在0.85以上,均方根误差约为3 m/s;在限定风速大于5 m/s时,风向比对的均方根误差会低于20°.风速与风向的比对结果验证了风场的可靠性.

Due to the small antenna aperture,the portable high frequency surface wave radar（HFSWR） with wide beam,which undoubtedly increases the difficulty of the winds and waves extraction,thus,an empirical relationship between the significant wave height and the wind speed was derived.Combining a modified wind direction inversion algorithm,long-distance sea surface wind field could be achieved without any prior information.The extracted wind field included both of the wind speed and direction information.In order to verify the reliability of the wind field,radar measurements were compared with the buoys data.Results show that the correlation coefficient of wind speed is above 0.85,the root mean square error is about 3 m/s;the root mean square error of the wind direction is less than 20°,when the wind speed is greater than 5 m/s.The wind speed and wind direction results verified the reliability of the wind field.