说明：  在节点移动规律无法预知、连通性较差的延迟容忍网络中,针对DTN 网络的Ferr y 节点自定位方案, 能够有效提 高网络中数据信息采集效率。
(Unpredictable node movement law, poor connectivity, delay tolerant network, network Ferr y for DTN nodes self-positioning program, can improve the efficiency of the network information collection.)