基于改进四边测距算法的智慧农业无线传感器精确定位

发布时间：2018-03-02 18:46

  本文选题：智慧农业　切入点：无线传感器　出处：《江苏农业科学》2017年17期 　论文类型：期刊论文

【摘要】：为提高智慧农业中无线传感器目标定位的精度,采用改进四边测距算法。首先通过4个查询节点坐标构造与信标节点坐标的线性方程,为兼顾定位区域其他信标节点定位误差,对信标节点的坐标误差求均值;随后未知节点到信标节点的距离采用牛顿迭代求精;最后对邻居位置相对不集中的节点进行排除,并且给出了算法流程。试验仿真显示,在信标节点比例增加的情况下,该算法比其他算法的定位误差下降速度快,定位误差与其他算法间隔比较大,而且变化幅度较小,定位性能趋于稳定。
[Abstract]:In order to improve the precision of target location of wireless sensor in intelligent agriculture, an improved quadrilateral ranging algorithm is adopted. Firstly, the linear equation between the coordinates of four nodes and the coordinates of beacon nodes is constructed to give consideration to the localization errors of other beacon nodes in the localization area. The mean value of coordinate error of beacon node is obtained; the distance between unknown node and beacon node is refined by Newton iteration; at last, the node whose neighbor position is relatively not concentrated is excluded, and the algorithm flow is given. When the number of beacon nodes increases, the localization error of this algorithm decreases faster than that of other algorithms, and the distance between the location error and other algorithms is larger, and the range of variation is small, and the localization performance tends to be stable.
【作者单位】： 黄淮学院;河南师范大学新联学院;
【基金】：河南省教育厅课题(编号:2016-JSJYYB-182)
【分类号】：S126;TP212
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本文编号：1557730