无线网络中指纹法定位技术的研究与应用.docVIP

  无线网络中指纹法定位技术的研究与应用 张源1，张建明2，杨大成1** （1. 北京邮电大学信息与通信工程学院，北京 100876； 5 10 15 20 25 30 35 40 45 2. 北京邮电大学电子工程学院，北京 100876） 摘要：相比 TDOA,AOA 等定位方法，指纹法具有精度高，单基站即可完成定位的优点。使用 指纹法不需要改变终端硬件，只需要对系统进行简单的升级就可以实现。因此对指纹法进行 研究十分必要。本文依靠指纹法理论知识，采用 SAS 统计分析工具，进行了指纹法定位的聚 类判别分析。设计出两种实验方案，基于经纬度的指纹定位和基于 BCCHLevel 的指纹定位。 从这两种方案的特点出发，从原始数据中筛选出样本数据。并使用 SAS 聚类分析工具按照不 同的聚类标准分类样本，建立指纹法数据地图。提取定位数据，导入 SAS 进行判别分析，设 计撰写判别分析代码，从而对待定位数据进行判别分析。绘制判别分析结果的坐标散点图、 CDF 图。并就 SAS 得到的判别分析结果与所绘制的散点图，分析不同方案下指纹法算法精度 等性能。 关键词：通信与信息系统；无线定位；指纹法；SAS 中图分类号：TN929.53 RESEARCH AND APPLICATION ON FINGERPRINT POSITIONING TECHNOLOGY IN WIRESS NETWORK ZHANG Yuan1, ZHANG Jianming2, YANG Dacheng1 (1. School of Information and Communication Engineering,Beijing University of Posts and Telecommunication,Beijing 100876; 2. School of Electronic Engineerin,Beijing University of Posts and Telecommunication,Beijing 100876) Abstract: Compared with TDOA, AOA and other positioning methods, fingerprinting has some advantages such as high precision, the ability of positioning with single base station. When using fingerprint, there is no need to change the terminal hardware and the upgrading of system can be achieved easily. So reasearching on fingerprint is really make sense. This paper rely on theories and knowledge of fingerprint. With the help of SAS statistical analysis tool, the paper process the cluster analysis and discriminant analysis using fingerprint method. Design two experiment case, fingerprint positioning based on latitude and longitude and fingerprint positioning based BCCHLevel. Starting from the characteristics of the two cases, sample data are screened from the raw data. With the help of cluster analysis tool in SAS, the samples are classified according to different cluster standard, and fingerprint data map is established. The positioning data are extracted from raw data, and these data are imported into SAS to proceed discriminant analysis. And the positioning discriminant code designed and written. The positionin