【摘要】 在第三方参考广播协议的基础上,提出了一种基于节点密度的时间同步协议.该协议利用节点同步消息取代第三方广播消息,减少了消息发送数量.时间同步中每个节点只需发送两个数据包,通过消息夹带增加时钟调整的参考点来提高时间同步的精度.从理论上证明了同步精度与节点密度之间的关系;通过对比实验验证了协议的正确性和有效性,进而证明了同步精度随节点密度的增加而提高.更多还原

【Abstract】 A novel synchronization protocol is presented,giving the extension of third party reference broadcast and concerned with the deployed density of WSN nodes.The third party reference messages are replaced by synchronization messages,and each node only need send two synchronization messages.Additional information is carried securely in synchronization message to increase the number of reference points,and to increase synchronization precision.Relation between precision and nodes density is proved.Finally,validation is done in the evaluation system,and the validity is evaluated and compared with the typical algorithms.Further examination is done to validate the relation of precision and nodes density.更多还原