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Wang S.-Y.,Ocean University of China | Wang S.-Y.,CSIC PRIDE Nanjing Atmospheric and Oceanic Information System Co. | Chu X.-L.,Ocean University of China | Chu X.-L.,First Institute of Oceanography | And 4 more authors.
Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | Year: 2014

Based on the idea of the multiple beam method, the least squares multi beam method is developed to resolve the problem that there is no intersections between beams by the traditional means of implementation. The method is used to process the data obtained from the OS081H high frequency surface radar system and the results are compared with the data obtained from automatic meteorological station. It is showing that this method can eliminate the wind direction ambiguity. In addition, the results are compared with the data obtained by the maximum likelihood method and the effect of wind speed on the accuracy of inversion is discussed. The results show that the correlation and accuracy improves as wind speed increases.


Chu X.-L.,First Institute of Oceanography | Chu X.-L.,Ocean University of China | Zhang J.,First Institute of Oceanography | Wang S.-Y.,CSIC PRIDE Nanjing Atmospheric and Oceanic Information System Co. | And 2 more authors.
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | Year: 2015

The Barrick's model of significant wave height inversion is a relatively practical model for the high-frequency surface wave radar (HFSWR) sea echoes. For improving the inversion accuracy of the significant wave height, a three-parameter model is proposed, in which a modulation parameter is added to improve the degree of fitting. The significant wave heights inversed by applying the model to data obtained from HFSWR are compared with the buoy values. The correlation coefficient between the radar inversed and those of the buoy is 0.81, and the mean square root error (RMSE) is 0.42 m. Meanwhile, the modified model and other models are compared and analyzed, and the results show that the significant wave heights obtained from the modified model are slightly better than other models. ©, 2015, Chinese Institute of Electronics. All right reserved.

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