The purpose of the paper is as following : ( 1 ) the study of data fusion between ais target and radar target can partly resolve the problem of leak and fault track and the problem of target exchange 本文的研究的意义有以下三个方面： ( 1 )研究ais目标与雷达目标的数据融合可以部分的解决雷达目标跟踪的错漏跟踪和目标交换问题。
