MEASURING SEA ICE DRIFT VIA CROSS-CO

MEASURING SEA ICE DRIFT VIA CROSS-CORRELATION OF RADAR ICE IMAGES

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.

作 者： SUN He-quan SHEN Yong-ming QIU Da-Hong   作者单位： State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China  刊 名： 水动力学研究与进展B辑  ISTIC EI 英文刊名： JOURNAL OF HYDRODYNAMICS  年，卷(期)： 2004 16(6)  分类号： P7  关键词： sea ice drift   radar ice image   cross-correlation  

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