中文摘要：

尽管许多古典 IP geolocation 算法对连接富人的网络合适，他们的表演严重与弱延期距离关联在连接穷人的网络被影响。这份报纸试着由在连接穷人的网络内发现连接富人的子网改进古典 IP geolocation 算法的表演。首先，一个新延期距离关联模型(RTD-Corr 模型) 被建议。它造在象网络路径和繁殖延期的比率的扭曲那样的延期距离关联和实际网络因素之间的关系。基于 RTD-Corr 模型和实际网络特征，第二，这份报纸关于怎么在是一个典型实际连接穷人的网络的中国因特网内发现连接富人的网络讨论。然后，我们通过盖住三主要 ISP 和三十个省的大规模网络大小发现中国因特网的连接富人的子网。基于成立连接富人的子网，最后，我们在他们的精确性显著地被增加的中国因特网表演修改二个古典 IP geolocation 算法和实验。

英文摘要：

Although many classical IP geolocation algorithms are suitable to rich-connected networks, their performances are seriously affected in poor-connected networks with weak delay-distance correlation. This paper tries to improve the performances of classical IP geolocation algorithms by finding rich-connected sub-networks inside poor-connected networks. First, a new delay-distance correlation model （RTD-Corr model） is proposed. It builds the relationship between delay-distance correlation and actual network factors such as the tortuosity of the network path and the ratio of propagation delay. Second, based on the RTD-Corr model and actual network characteristics, this paper discusses about how to find rich-connected networks inside China Intemet which is a typical actual poor-connected network. Then we find rich-connected sub-networks of China Intemet through a large-scale network measurement which covers three major ISPs and thirty provinces. At last, based on the founded rich-connected sub-networks, we modify two classical IP geolocation algorithms and the experiments in China Intemet show that their accuracy is significantly increased.