基于距离修正的DV-Hop改进算法

Improved Dv-Hop algorithm based on distance amendment

传统的DV-Hop算法定位精度不高,针对这种情况,提出一种基于距离修正的改进算法。改进算法在两方面对传统算法进行改进。首先修正锚节点间距离,通过修正后计算出的平均跳距更加精确。第二步修正未知节点到锚节点距离,使估算出的未知节点位置更加准确,最终达到高精度定位。修正后在matlab平台上进行仿真,仿真结果表明定位精度有明显提高,是一种简单实用的改进定位算法。

The positioning accuracy of the traditional Dv-Hop algorithm is not high. For this case,the improved algorithm based on distance amendment is proposed. Improved algorithm improve the traditional algorithms in two aspects.Firstly, the distance between all the anchor nodes are refined to make the average hop distance is more ac-curate. Secondly, the distance between anchor nodes and unknown nodes are refined to make sure that the position of unknown nodes are more accurate, and ultimately achieve high precision positioning. Simulation on matlab plat-form after amendment ,the imulation results show that the positioning accuracy is obviously improved. The im-proved algorithm is a simple and practical algorithm.