中文摘要：

为研究开阔水域中船舶领域与船舶领域影响因素之间的变化关系,应用小波分析算法,以渤海和黄海北部水域船舶自动识别系统数据为基础,应用MATLAB中的小波工具箱对船舶领域及船舶领域影响因素进行小波变换,得到不同影响因素值下的船舶领域。结果 表明：船舶领域随船舶大小、速度的增大而增大,随会遇角度的增大而减小,随其他影响因素变化的规律不明显。

英文摘要：

The wavelet transform is introduced to reveal the relationship between the dimension of ship domain and the influence factors. The Automatic Identification System （AIS） data from Bohai Sea and north Yellow Sea （China） are processed with the MATLAB wavelet toolbox to find the dimension changes of a ship domain against the variation of the inference factors. The analysis shows that the ship domain increases as ship size/speed increases, decreases as the encounter angle increases, while it seems uneorrelated with other factors.