Street-Level Landmark Evaluation Based on Nearest Routers
Street-Level Landmark Evaluation Based on Nearest Routers
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DOI：
10.1155/2018/2507293
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发表时间：
2018-01-01
影响因子：
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通讯作者：
Luo, Xiangyang
中科院分区：
文献类型：
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作者：
Li, Ruixiang;Sun, Yuchen;Luo, Xiangyang
高可靠性的街道级地标是IP定位的基础，但已有的地标评价方法无法对街道级地标进行评价。为此，本文提出了一种基于最近路由器的街道级地标评价方法。声明的位置组织被视为一个区域，而不是一个点。首先，通过IP位置数据库验证预先评估的地标的声明位置。其次，根据其最近的路由器对预先评估的地标进行分组。然后，通过延迟距离相关，利用地标与其最近路由器之间的延迟值来获得距离约束。建立了距离约束、组织区域半径和两地标间距离之间的关系模型。最后，根据相关模型和二项分布计算各组标志点的可靠性值。基于7082个预评估地标进行地标评估实验，结果表明使用评估地标的地理定位误差明显降低。对上海市100个目标的平均误差由7.832km减小到2.185km。
High reliable street-level landmarks are the basis of IP geolocation, but landmark evaluation methods having been proposed cannot evaluate the street-level landmarks. Therefore, in this paper, a street-level landmark evaluation method based on nearest router is proposed. The location organization declared is regarded as an area not a point. Firstly, the declared location of preevaluated landmark is verified by IP location databases. Secondly, the preevaluated landmarks are grouped according to their nearest router. Then, the distance constraint is obtained using delay value between landmark and its nearest router by delay-distance correlation. And relation model is established among distance constraint, organization's region radius, and distance between two landmarks. Finally, the reliability value of landmarks is calculated in each group based on relational model and binomial distribution. Landmarks evaluation experiment is taken based on 7082 preevaluated landmarks, and the results show that geolocation errors decrease obviously using evaluated landmarks. The mean error of 100 targets in Shanghai is reduced from 7.832km to 2.185km.