一种基于AF协作通信的TDOA定位算法

介绍了TDOA定位算法和AF协作通信，针对TDOA定位算法在恶劣信道环境下面临信标节点数量不足的问题，提出了一种改进算法。基于AF协作通信原理，引入仅有转发功能的廉价中继节点，在信道环境劣化时将中继节点升级为信标节点，满足定位对信标节点数量的需求，完成定位运算。该算法无需额外硬件支撑，功耗小，成本低，适合大规模应用。

TDOA Positioning Algorithm Based on AF Cooperative Communication

This paper introduces TDOA positioning algorithm and AF cooperative communication. An improved algorithm is proposed to solve the problem of insufficient beacon nodes with current TDOA positioning algorithm when applied in bad channel environment. Based on AF Cooperative communication, this new algorithm introduces cheap relay node in the situation of channel debilita- ting and turns them into beacon node. The improved algorithm needs no more hardware support, has lower power consumption or price cost, and is suitable for large-scale applications.