一种改进的RSSI定位算法研究

An Improved RSSI Localization Algorithm

目的研究一种基于无线传感器网络的城市公交车站牌的定位算法,能够解决曲线道路的定位问题,提高定位精度。方法以RSSI测距算法为基础,提出一种改进的RSSI定位算法,该算法利用曲线道路弯道之间的夹角,结合三角形定理,计算得到公交车辆与站牌之间的距离。结果在曲线道路定位时,仿真数据表明,改进的RSSI定位算法在不增加成本、通信功耗的情况下,相较于RSSI测距算法,定位精度有所提高,定位误差有所降低。结论本算法具有更好的定位性能,可用于各种道路的公交车辆定位。

Objective A localization algorithm of the city bus stop plate based on wireless sensor network was proposed to solve the problem of locating under curve road and improve positioning accuracy.Methods Based on RSSI ranging algorithm,an improved RSSI localization algorithm was proposed:combined with the triangle theorem,the algorithm used the angle between the curve and the curve to calculate the actual distance between the bus vehicle and platform.Results On the curve road under the positioning,the simulation data showed that the improved RSSI localization algorithm improved the positioning accuracy and reduced the positioning error when compared with the RSSI ranging algorithm without increasing the cost and power consumption.Conclusion The algorithm has better positioning performance and can be used for a variety of road bus positionings.