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基于接收信号强度指示加权融合的定位算法

DOI: 10.11830/ISSN.1000-5013.2012.06.0635

Keywords: 接收信号强度指示, Kalman滤波, 非视距误差, 加权融合三边定位算法, 无线传感器

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Abstract:

基于接收信号强度指示的无线传感器网络定位问题,提出一种改进Kalman滤波方法,消除测距过程中的非视距误差,得到标签与节点间的估计距离.然后,分析标签与节点的距离、定位单元质量和标签所处的位置三方面对定位精度的影响,提出一种改进三边定位算法,并根据滤波后的估计距离计算得到的多个定位坐标进行加权融合.最后,通过Matlab仿真验证所提算法的有效性.

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