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在阐明ITS数据融合的意义及层次性的基础上，分析了数据层多源ITS数据融合及支持向量机的特点，根据支持向量机（SVM）的原理设计了利用支持向量机进行多源ITS数据融合的思路，并从支持向量机训练、训练结果评价以及支持向量机测试三个方面提出了该思路的实现步骤。在对日本阪神公路上堺入口的二源交通流数据进行支持向量机融合后，比较融合前后的数据，证明所提出的基于支持向量机技术的数据层多源ITS数据融合方法能够有效地进行数据质量控制，提高数据的精确度。

AN SUPPORT VECTOR MACHINE-BASED APPROACH TO DATA-LAYER MULTI-SOURCE ITS DATA FUSION

Through a characteristics analysis of multi-sources ITS data fusion on data layer and support vector machine,this paper has proposed a multi-sources ITS data fusion approach using support vector machine on the basis of theory of support vector machine(SVM) and designed implementation processes of this approach from support vector machine training,training result evaluation,and support vector machine test.The comparison of data for before and after support vector machine fusion when applying to two-source traffic flow data from BanShen highway ShangJie on-ramp in Japan demonstrates that the proposed fusion approach can process the data quality control effectively,which improves the level of the data accuracy.