基于天牛须搜索优化的室内定位算法

Indoor Location Algorithm Based on the Search Optimization of the Beetle

室内定位技术受到广泛的关注,基于接受信号强度指示(RSSI)的测距技术目前在节点定位中得到广泛应用.在基于RSSI测距的基础上,提出将天牛须搜索优化(BAS)算法应用到室内定位中.首先通过RSSI测距获得未知节点与锚节点之间的距离,在计算距离时对数据进行了预处理,从而提高测距的精度.然后引入BAS算法计算出未知节点的位置坐标.通过与粒子群定位算法(PSO)和遗传定位算法(GA)对比试验结果,验证了BAS定位算法对室内定位效率的提高更加明显.

Indoor positioning technology has received wide attention.The distance measurement technology based on Received Signal Strength Indication(RSSI)is widely used in node location.On the basis of RSSI ranging,we apply the Beetle Antennae Search(BAS)algorithm to indoor location.Firstly,the distance between the unknown node and the anchor node is obtained by RSSI ranging.The data is preprocessed when calculating the distance,so the accuracy of ranging is improved.Then the BAS algorithm is used to calculate the position coordinates of the unknown node.The experimental results were compared with PSO localization algorithm andGA localization algorithm,It is verified that the BAS positioning algorithm is more effective in improving indoor positioning efficiency.