无线传感器网络的一种改进定位算法

Based on DLE Location method, an Improved Location algorithm was proposed to solve the problem of low location accuracy and complexity of its farther improvement in DLE method. The proposed algorithm reserves the simplicity of ER algorithm. Making use of property of WSN, it introduces 2-hop neighbor beacon into ER Algorithm to get 2-hop estimative rectangular. This not only simples the Improved Position Algorithm; but also lowers capacity of beacon. Simulation shows that Improved Location Algorithm can enhance location accuracy greatly when the anchor ratio is lower; while when the anchor is higher, it also achieves better location accuracy than DLE.