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论文类型： 期刊论文

发表时间： 2004-12-01

发表刊物： JOURNAL OF HYDRODYNAMICS

收录刊物： Scopus、SCIE、EI

卷号： 16

期号： 6

页面范围： 716-720

ISSN号： 1001-6058

关键字： sea ice drift; radar ice image; cross-correlation

摘要： The motion of sea ice has a great effect on winter navigation, and oil field exploration in the Bohai Sea. It is very important to measure the ice drift accurately and efficiently. As a practical technique, radar imagery has been used for sea ice monitoring and forecasting for a long time. Combining with the radar imagery and cross-correlation technique, a new measurement method based on the cross-correlation of radar ice images is specified in this paper to obtain full field measurement of sea ice drift. The theory and fast implementation of cross-correlation are presented briefly in the paper, including the filtering method to modify the invalid vectors. To show deeply the validity of the present method, the velocity maps of sea ice drift are provided in the paper, which are calculated from the radar images grabbed in the Liaodong Gulf. The comparison with the traditional tracing method is also conducted.