传感技术学报2017，Vol.30Issue(6)：922-928,7.DOI:10.3969/j.issn.1004-1699.2017.06.020
水下传感器网络时间同步和定位的联合实现方法
Joint Implement Approach for Time Synchronization and Localization in Underwater Sensor Networks
摘要
Abstract
In underwater sensor networks,signal propagation speed is difficult to be determined due to the influence of environmental parameters,which increases the difficulty of time synchronization and localization. When the signal propagation speed is unknown,a joint implementation scheme for time synchronization and localization is put forward in underwater sensor networks. By building the optimization function and model of the problem, the linear least squares(LLS)estimation,least squares semidefinite programming(LS-SDP),squared least square semidefinite pro-gramming(SLS-SDP)and squared least square second order cone and semidefinite programming(SLS-SOCSDP)al-gorithms are designed,then the computational complexity of the proposed algorithms is analyzed. The simulation a-nalysis shows that the linear algebra LLS algorithm runs fast and obtains high positioning accuracy in low noise con-ditions. The stability of LS-SDP,SLS-SDP and SLS-SOCSDP algorithm with convex optimization is better,but the computation complexity is higher.关键词
水下传感器网络/定位/时间同步/到达时间Key words
underwater sensor networks/localization/time synchronization/time of arrival分类
信息技术与安全科学引用本文复制引用
严长虹,马静..水下传感器网络时间同步和定位的联合实现方法[J].传感技术学报,2017,30(6):922-928,7.基金项目
国家自然科学基金项目(71373123) （71373123）
江苏高校哲学社会科学研究重点项目(2015ZDIXM007) （2015ZDIXM007）
南京航空航天大学基本科研业务费重大项目( NP201630X) （ NP201630X）
