基于节点选取的RSSD两轮协同定位算法

针对无线传感器网络能量有限、节点密集、能适应动态变化的特点，对于非配合式无源定位问题，提出一种关于节点选取的接收信号强度差（ RSSD）两轮协同定位算法。在首轮初步定位结果的基础上，提出正多边形匹配因子，在空间域上选择最优节点参与定位，得到最终定位结果，从而提高了定位精度。仿真结果表明：此方法融合了无线传感器网络的特点，充分利用空间位置对定位的影响，通过对比仿真，证明了本文方法的有效性。

RSSD two-wheeled cooperative localization algorithm based on nodes selection

Aiming at characteristics of limited energy of networks,concentrated nodes and is adapted to dynamic change of the wireless sensor networks( WSNs ),a localization algorithm of two-wheeled cooperative based on nodes selection received signal strength difference( RSSD )is proposed to solve the problem of uncooperative passive localization. On the basis of the first round result,regular polygon matching factor is proposed to select the optimal nodes in the space domain to get the final localization result and improve the localization precision. Simulation results show that the proposed method combines the characteristics of WSNs and make full use of influence of space position. By comparing the simulation,the effectiveness of this method is proved.