摘要
室内定位是目前普及性较小、实际需求很迫切的技术,为了实现在室内复杂环境中的准确定位,设计了一种轻型、方便、可离线的WiFi定位系统。系统基于Android平台开发,在K近邻值RSSI算法的基础上加了后校验方法以避免定位坐标的过度偏移。与传统WiFi定位系统相比,该系统的数据库在设备端集成,避免了与数据库连接和通信不便带来的定位延时和失败。经测试,该系统能在楼道房间等场景中稳定工作且误差范围控制在3m以内,基本能满足室内移动定位的需求。
Indoor positioning is not a popular technology ,although it is widely used in our daily life .In order to achieve accurate positioning in the indoor complex environment ,a light ,convenient and off‐line WiFi positioning system is designed .The system based on Android platform is developed ,which is based on the improved RSSI algorithm added by after verification method to avoid the excessive migration of the position coordinates . Compared with the conventional WiFi positioning system ,the database of the system is integrated in the equipment to avoid the positioning delay and failure caused by the connection of the database and the communication inconvenience .After testing ,the system can work stably and control the range of error within 3 meters in the corridor room scene ,which can meet the requirement of indoor mobile positioning .
作者
王阳
叶芝慧
冯奇
郭小青
Wang Yang Ye Zhihui Feng Qi Guo Xiaoqing(School of Electronic Science and Engineering, Nanjing University, Nanjing 210023 ,China)
出处
《电子测量技术》
2016年第9期16-19,25,共5页
Electronic Measurement Technology
基金
卫星通信与导航协同创新中心(SatCN-201408)
国家海洋公益重大专项(201205035-07)
南京大学优秀博士研究生创新能力提升计划B(201501B013)资助项目
作者简介
王阳，硕士研究生，主要研究方向为惯性导航、室内定位。叶芝慧（通讯作者），副教授，主要研究方向为卫星通信、深空通信。E-mail：yezh@nju．edu．cn冯奇，博士研究生，主要研究方向为卫星通信、认知无线电。郭小青，硕士研究生，主要研究方向为无线通信、MIMO系统。
