中文摘要：

针对DV—HOP（distance vector hop）算法的定位精度对节点间跳数信息依赖性较强的特点，提出一种基于接收信号强度指示（received signal strength indicator，RSSI）每跳分级和平均跳距修正的DV—HOP改进算法RADV—HOP（RSSI and average hopping distance modifying DV—HOP）。仿真结果表明：在相同的网络环境里，与传统DV—HOP算法相比，RADV—HOP定位算法仅需节点通信芯片带有RSSI指示功能及增加少量的计算和通信开销，不需要额外的硬件开销，将每跳分为3个子级时，归一化定位误差能下降65％；与其他DV—HOP修正算法相比，RADV—HOP算法以相同的通信开销和稍微增加的计算开销使定位误差下降了45％。

英文摘要：

Aiming at the fact that the localization accuracy of DV-HOP（ distance vector hop）algorithm depends on the information of hop-counts among nodes, an improved RADV-HOP （RSSI and Average hopping distance modifying DV- HOP） algorithm is proposed. The RADV-HOP algorithm uses RSSI to subdivide one hop into several grades and modifies the average hopping distance used in DV-HOP localization algorithm. Simulation results show that in the same network environment, compared with traditional DV-HOP algorithm, the RADV-HOP algorithm only needs a node communication chip with RSSI indicator function, adds a little computation and communication overhead, and does not need extra hardware overhead; when each hop is divided into three grades, the normalized localization error is decreased by 65%. Compared with other improved DV-HOP algorithms, the RADV-HOP algorithm can make the normalized localization error decrease by 45% at the cost of a little computation complexity and the same communication overhead.