传感技术学报2016，Vol.29Issue(3)：397-402,6.DOI:10.3969/j.issn.1004-1699.2016.03.016
一种传感网时间同步和定位的联合线性估计方法
A Joint Linear Estimation Approach for Time Synchronization and Localization in Wireless Sensor Networks
摘要
Abstract
It is simple to estimate the locations of sensor nodes by using the time measurements which are widely used in sensor networks. However there is a drift and deviation of the time clock,which leads to inaccurate time measurement. Based on the clock drift and deviation model,a joint linear estimation method for time synchroniza⁃tion and node localization is proposed,including the least squares(LS)and the weighted least squares(WLS)meth⁃od. The simulations tested the running time of the designed algorithm and analyzed the impacts of the noises on the estimation error with the joint estimation method. The results show that the LS and WLS linear estimation algo⁃rithms run faster than the SDP algorithm,and the LS and WLS linear estimation methods have high stability and ac⁃curacy in low noise conditions.关键词
传感网/定位/时间同步/到达时间Key words
wireless sensor networks/localization/time synchronization/time of arrival(TOA)分类
信息技术与安全科学引用本文复制引用
顾治华,朱雪芬,吴晓平,陈道钱..一种传感网时间同步和定位的联合线性估计方法[J].传感技术学报,2016,29(3):397-402,6.基金项目
国家自然科学基金项目（61190114，61303236）；浙江省自然科学基金项目（LY16F020036）；浙江农林大学人才启动项目（2013FR086）；浙江省科技计划项目重大科技专项项目 （）
