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中文摘要：
建筑物结构等因素导致全球定位系统GPS在室内定位精度急剧下降.针对复杂室内环境,提出-种基于线 性规划的电磁波自由传播衰减自适应模型,提高室内蓝牙定位系统的精度.通过高斯滤波优化RSSI值校准基准信 号,运用线性规划方法动态预测环境衰减系数,进而获取精确的目标节点距离.实验结果表明,在复杂室内环境下, 当节点与参考节点距离小于1.5m时,绝对误差不大于0.25m;当距离大于1.5m,相对误差小于7.8%,可满足室内 定位的需求.
英文摘要：
Building structure and other factors lead to the performance deterioration of GPS indoor positioning system. An adaptive model of electromagnetic wave free propagation attenuation is proposed to improve the blue- tooth positioning performance in the complex indoor environment. The optimization of calibration of RSSI by Gaussian filter, together with dynamic prediction of attenuation coefficient, is used to obtain the accurate distance between the nodes. Experimental results show that when the absolute distance difference between reference node and actual node is not far from 1.5 meters, the absolute error is less than 0.25 meters, and when the absolute distance difference is more than 1.5 meters, the relative distance difference is less than 7.8% in the complex in-door environment.
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