基于修正残差的物联网节点定位算法仿真  

Simulation of Internet of Things Node Localization Algorithm Based on the Modified Residual

作　　者：李余琪[1] 

机构地区：[1]梧州学院计算机系,广西梧州543002

出　　处：《计算机仿真》2013年第5期217-220,共4页Computer Simulation

基　　金：广西重大科技攻关项目(桂科攻12118017-6);国家自然科学基金项目(51074097);广西自然科学基金项目(2011GXNSFA018165)

摘　　要：针对物联网系统中,底层传感节点种类众多,分布随机性很强,节点分布不均匀,节点之间的属性存在较大差异,很难建立统一的节点属性的测距模型。传统的测距定位算法由于无法建立统一的定位测距模型,造成在密集节点区域节点属性多样化明显,造成节点属性的测距误差较大,引起定位不准的问题。提出了一种基于修正残差算法的物联网节点定位方法。通过对测距结果进行测距残差的有效修复,在残差修正的基础上,利用跟踪滤波算法进行节点的跟踪处理,保证未知节点的位置计算的准确性。计算机仿真结果证明,改进方法能够较大幅度提高物联网结构下节点定位的准确性,在物联网小区域的节点定位领域有广阔的应用前景。A nodes location method of internet of things was proposed based on the residual error correction algorithm. The measurement residual was corrected based on the measurement result, and on the basis of the residual correction, the tracking processing of the nodes was worked based on the tracking filtering algorithm. The precision of lo- cation calculation of the unknown nodes was ensured with the improved method. The computer simulation result shows that the improved method can improve the location precision of the nodes in the system of internet of things, and it shows good application perspective for the small area nodes location in the internet of things.

关 键 词：节点定位 物联网 残差修复 

分 类 号：TP293[自动化与计算机技术—检测技术与自动化装置]