基于RSSI值的定位算法分析与改进

本文在对比测距方法的基础上了，介绍了RSSI测距的原理，分析了APIT算法在平面直道类型区域定位中的不足，并提出IAPIT算法。采用直道分布模型处理参考节点的分布，保证未知节点运动轨迹始终在某两个参考节点区间内，从而在定位算法上使定位算法简单，易实现。研究表明IAPIT算法复杂度低，定位精度有很强的伸缩性，定位过程中对节点连通度要求低。

The Positioning Algorithm Analysis and Improvement Based on RSSI

based on the comparison location method, and introduced the principle of RSSI ranging analysis of the APIT algorithm in the plane straight type of area targeted in the shortage and propose IAPIT algorithm. Distribution model with straight dealing with the distribution of reference nodes to ensure that the node trajectory is always an unknown two reference nodes in a certain range, thereby positioning algorithms to enable positioning algorithm is simple and easy to achieve. Studies have shown that IAPIT algorithm complexity low, positioning accuracy has a strong flexibility, positioning during the course of the node connectivity that require low.