摘要
航迹推算不需要外部传感器信息,并具有定位精度高的优点,因此广泛应用在移动机器人的定位领域,但在移动无线传感器网络节点定位中,航迹推算难以避免误差的累积,且需要设定初始坐标。现提出一种基于航迹推算与接收信号的强度指示法(RSSI)相结合的移动传感器网络节点定位方法,该方法将二者的优缺点互补,具有不需要信标节点、计算量小、对硬件要求低等特点,且可以解决误差累积的问题。利用Matlab进行了仿真,仿真结果表明该方法明显地提高了定位精度,可以有效地应用在移动无线传感器网络中。
Dead reckoning can be used to navigate and position in the field of mobile wireless sensor network because of no requirement of external sensor information and high precision. However, in the field of mobile wire-less sensor network node localization, this method can not avoid cumulative error and needs to initial the coordinate. A positioning method which is based on dead reckoning and RSSI localization is presented, with the charac- teristics of no requirement of anchor nodes, a small amount of calculation, small requirement of hardware and so on, it can solve the problem about the accumulated error. A simulation using Matlab was conducted. The result shows that this method significantly enhances the positioning accuracy and can be used widely in the mobile wireless sensor network.
出处
《科学技术与工程》
北大核心
2014年第4期245-249,共5页
Science Technology and Engineering
基金
国家自然科学基金(61074178)资助
