改进的LANDMARC算法在ZigBee室内定位中的应用

随着室内定位技术的广泛应用,对定位精度的要求越来越高,传统的LANDMARC算法已不能满足实际应用的需求,因此,结合传统的LANDMARC算法和质心算法,提出一种改进的LANDMARC算法.首先利用MATLAB进行了理论仿真,研究发现改进的LANDMARC算法在参考标签间隔在0～5m时,定位精度要优于传统经典算法,且定位精度最大可提高35.4％.其次使用ZigBee定位系统进行了实验测量,研究发现实验测量结果与理论仿真结果基本吻合.

Application of modified LANDMARC algorithm to ZigBee indoor location

The demands of location accuracy are increasingly high with the widespread use of indoor location technology.The traditional LANDMARC algorithm has been unable to meet the needs of practical application.Thus,a modified LANDMARC algorithm is proposed based on the classical LANDMARC algorithm and centroid algorithm.Simulation researches are carried out under MATLAB environment in this study.The results show that the modified LANDMARC algorithm is better than the original classical algorithm when the reference interval is 0 to 5m,and the maximum of the location accuracy can be increased by 35.4％.Then a location measurement system is built with the ZigBee modules,and the experimental results agree well with the theoretical simulation results through the analysis of experimental measurement.