基于点集偏差的船舶交通流不均匀性度量研究

Study on Measurement of Vessel Traffic Flow Inhomogeneity Based on Discrepancy of Point Sets

为探究区域范围内船舶交通流空间分布形态特征,通过系统分析船舶交通流形态特征,提出区域船舶交通流在空间分布形式上具有不均匀分布特性.定性分析了区域船舶交通流空间分布不均匀性特征的影响因素及演化机理,并基于点集偏差理论,建立了区域船舶交通流空间分布不均匀性的度量模型,并以长江口进出港航道和烟台西港主航道为例进行了实例分析.结果表明,该模型能够充分考虑及量化分析船舶交通流空间分布不均匀特征,计算结果能够为船舶交通流形态特征及态势研判度量指标的构建提供理论基础.

In order to explore the spatial distribution characteristics of ship traffic flow in the region, through systematic analysis of the characteristics of ship traffic flow, it is proposed that the regional ship traffic flow has non-uniform distribution characteristics in the spatial distribution form. The influencing factors and evolution mechanism of the spatial distribution non-uniformity of regional ship traffic flow were qualitatively analyzed. Based on the theory of discrepancy of point set, the measurement model of the inhomogeneity spatial distribution of area-wide vessel traffic flow was established. Taking the Yangtze channel and the main channel of Yantai West Port area as an example, the analysis was carried out. The results show that the model can fully consider and quantitatively analyze the non-uniform spatial distribution characteristics of ship traffic flow, and the calculation results can provide a theoretical basis for the construction of the measurement index of ship traffic flow morphology and situation analysis.