一种改进的三边定位算法

An improved trilateration positioning algorithm

  • 摘要: 针对基于加权最小二乘(WLS)的三边定位算法在线性化过程中损失定位信息的问题,提出了一种改进的三边定位算法。该算法利用WLS算法粗略估计未知节点的坐标,并利用损失的定位信息构建定位模型,通过求解该定位模型实现精确定位。仿真结果表明,与基于WLS的三边定位算法相比,该算法有效提高了定位精度,且巷道长宽比越大,定位性能越好。

     

    Abstract: Aiming at the problem that trilateration positioning algorithm based on weighted least squares (WLS) lost positioning information in linearization process, an improved trilateration positioning algorithm was proposed. In the algorithm, WLS algorithm is used to roughly estimate coordinates of unknown nodes, and lost positioning information is used to construct positioning model, so precise positioning is achieved by solving the positioning model. The simulation results show that positioning accuracy of the proposed algorithm is obviously higher than that of the trilateration positioning algorithm based on WLS, and the larger the length-width ratio of roadway is, the better the positioning performance of the proposed algorithm is.

     

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