基于RSSI的高效本地化方法,用于AP集群
Zhigang Su1, Zeyu Tian1, Jingtang Hao1
1Sino-European Institute of Aviation Engineering, Civil Aviation University of China, Tianjin 300300, China.
Sensors (Basel, Switzerland)
|September 9, 2023
概括
本研究介绍了一种访问点集群定位 (APCL) 方法,用于精确的无线传感器网络 (WSN) 跟踪. APCL方法提高了本地化准确性,并减少了移动目标的计算负载.
科学领域:
- 无线传感器网络 无线传感器网络
- 在本地化算法算法.
- 信号处理 信号处理
背景情况:
- 基于接收信号强度指示 (RSSI) 的本地化方法由于信号波动而面临准确性问题.
- 目标定位的最大概率估计 (MLE) 是计算复杂且非凸的.
- 现有的方法难以在无线传感器网络 (WSN) 中高精度实时定位移动目标.
研究的目的:
- 提出一种新的基于RSSI的访问点集群定位 (APCL) 方法.
- 提高在WSN中定位移动目标的准确性和降低计算复杂性.
- 解决当前基于RSSI的本地化技术的局限性.
主要方法:
- 使用多个局部受限制的访问点 (AP) 形成一个AP集群作为一个节点 (AN).
- 估计目标RSSI使用AN获得的多个样本.
- 通过用于快速计算的固有值方程,将MLE本地化问题转化为固有值问题.
主要成果:
- 与传统的基于RSSI的方法相比,APCL方法显示出更高的本地化准确性.
- 该APCL方法实现较低的计算力度,使实时本地化.
- 模拟和实验结果验证了APCL方法在WSN中移动目标的有效性.
结论:
- 拟议的APCL方法为WSN中的实时,高精度定位提供了显著的改进.
- APCL有效地减轻了RSSI波动,并简化了本地化计算.
- 这种方法为在无线环境中准确跟踪移动目标提供了可行的解决方案.
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