针对室内定位中接收信号强度指示(RSSI)受到环境干扰波动大,使得定位精度低且不稳定,但是单一滤波算法较难实现有效滤波的问题,本文提出基于中值和滑动窗口融合滤波的加权K最近邻(WKNN)定位算法,该算法分别用中值和滑动窗口对RSSI值进行滤波,再用卡尔曼算法对两种滤波结果进行融合,实现融合滤波,最后用基于动态权重的WKNN算法实现定位。实验结果表明,经过融合滤波处理RSSI后,定位的平均误差为0.946 m
定位精度优于单一滤波且更稳定。
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references
Zhang Xiaona,Zhang Shufang,Huai Shuaiheng.Low-Power Indoor Positioning Algorithm Based on iBeacon Network[J].COMPLEXITY,2021.
Spachos Petros,Plataniotis Konstantinos N..BLE Beacons for Indoor Positioning at an Interactive IoT-Based Smart Museum[J].IEEE Systems Journal,2020.
Kai Wen,Chee Kiat Seow,Soon Yim Tan.An Indoor Localization and Tracking System Using Successive Weighted RSS Projection[J].IEEE Antennas and Wireless Propagation Letters,2020.
Chinyang Henry Tseng,Jing-Shyang Yen.Enhanced Gaussian mixture model of RSSI purification for indoor positioning[J].Journal of Systems Architecture,2017.