摘要
利用安装于福建龙海的OSMAR071高频地波雷达和位于雷达波束范围内金门料罗湾口的波浪浮标在2008年11月1日至2009年4月30日半年期间的观测结果,对Barrick波高模型进行改进和模型系数拟合、标定,讨论了改进模型系数的稳定性。结果表明,该模型能适应噪声和干扰等因素对宽波束雷达有效波高探测结果的影响。雷达观测反演回报的有效波高与浮标观测结果对比,二者时间序列的均方根误差为0.39m,相关系数为0.67。
High Frequency Surface Wave Radar （HFSWR） is capable of all-weather remote sensing of large area ocean surface dynamics with relatively high precision. Some modifications were introduced into the Barrick＇s model of signifi- cant waveheight inversion formula to improve its performances in the presence of noises and interferences. We applied the model to the significant waveheight calculations from HFSWR field data and then fitting them to the significant wave- height results output from a wave buoy at Kingmen inshore located in the radiating coverage of the radar site. The fitting process resulted in an rms difference between the radar inversed significant wave height series and those of the buoy. The value of the rms difference was 0.39 m. The correlation coefficient between the radar inversed significant wave height series and those of the buoy was 0.67. Some stability and accuracy analysis on the inversion model had been carried out. An obvious bias was observed that the radar-derived wave heights did not go down as the buoy data did at low sea states. This could be explained by the relatively strong affections by noises and interferences as the second order sea echoes were weak Other factors, such as the temporal and spatial differences in radar detecting and buoy sampling also contributed to the bias.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2012年第2期210-216,共7页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金资助项目
60571065号
厦门大学近海海洋环境科学国家重点实验室资助课题
2006-2009
国家"863"计划项目
2009AA09A301号
