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接收信号强度指示(RSSI)测距结果的不唯一性和波动性使得单标签定位的精度不高甚至漂移.提出一种面向矿井目标的双标签定位方法,它为待定位目标配备两个水平或垂直定位标签,进而构造标签与定位基站测量距离和估计距离间的优化函数.优化函数通过双向迭代求精法求解,它包括迭代初值确定、左/右双向迭代两个主要步骤.双标签法以添设一个定位标签的极小代价大幅提高了定位精度,具有较强的抗噪能力和环境适应能力,适用于不同形状和大小的矿井对象.
The non-uniqueness and volatility of the received signal strength indicator (RSSI) results in poor accuracy and even drift of single label positioning.This paper proposes a dual label positioning method for mine target which is equipped with two levels or And then the label is positioned vertically to construct the optimization function between the measured distance and the estimated distance between the label and the positioning base station.The optimization function is solved by bidirectional iterative refinement method and includes two main steps of iterative initial value determination and left / right bidirectional iteration. In order to add a positioning tag at a very small price greatly improve the positioning accuracy, with strong anti-noise ability and environmental adaptability, suitable for different shapes and sizes of mine objects.