基于强度等级选择的船载航海x波段雷达数据风反演

Y. Liu, Weimin Huang, E. Gill
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引用次数: 5

摘要

本文提出了一种改进的基于强度等级选择的舰载x波段航海雷达图像海面风反演算法。介绍了一种数据质量控制过程,以提高风测量的精度,包括在时间综合雷达图像中识别障碍物和岛屿。利用谐波函数对选取的距离矢量进行最小二乘拟合,提高了天线观测方向的确定精度。从雷达数据中获得的风信息与船载风速计的结果进行了比较。改进后的算法将雷达和风速计的风向和风速的平均差值分别降低了7.4°和1.2 m/s。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Intensity-level-selection-based wind retrieval from shipborne nautical X-band radar data
In this paper, a modified intensity-level-selection-based algorithm for sea surface wind retrieval from shipborne X-band nautical radar images is presented. A data quality control process is introduced to improve the accuracy of wind measurements, including the recognition of blockages and islands in the temporally integrated radar images. Moreover, a harmonic function is used to least-squares fit the selected range vector to antenna look directions to improve the wind direction determination. The wind information obtained from the radar data is compared with shipborne anemometer results. The modified algorithm reduces the mean differences between the radar and the anemometer results for wind direction and speed by about 7.4° and 1.2 m/s, respectively.
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