Abstract: The data fusion model of wireless sensor networks is researched. The JDL model is the basis of multi-sensor networks. It is divided into five fusion levels according to functional partitioning of data fusion, in order to make a valid distinction among objective optimization, posture review, effect evaluation and process optimization. On this basis, as a comparison with other models, the advantages and disadvantages of each model are illustrated, and an effective reference for the practical application selection is provided.

Key words: multi-sensor networks, data fusion, functional model