( 3 ) at the same time , the realization of combined gps / vts application is really useful in such enterprises as harbors and oil - fields . in this kind of system , we identify the own ship and some special ship through gps automatic supervision system . and it takes obvious effect in vts ( 3 )同时gps / vts组合应用的实现在许多港口和油田等企业都很有实用价值,在这种系统中使用gps自动监测系统可以识别本单位的船舶和某些特定的船舶,在水上交通系统的管制和监视中起到明显的作用,同时客户/服务器引入解决了vts系统中信息共享和信息冗余的问题。