CAJ | 학술논문

针对室内GPS定位无法准确获取位置信息的问题，在Android平台上设计利用WiFi信号强度特征进行定位的系统。该系统由安卓客户端、Tomcat服务器以及MySQL数据库组成，在一般位置指纹定位算法的基础上，通过MAC地址对无线接入点( AP)进行过滤，选取固定的参考AP获取位置指纹信息，并结合改进的K最近邻匹配算法，进一步减小定位误差。实验结果表明，该系统定位速度快、定位精度高，具有较好的室内定位效果。
침대실내GPS정위무법준학획취위치신식적문제，재Android평태상설계이용WiFi신호강도특정진행정위적계통。해계통유안탁객호단、Tomcat복무기이급MySQL수거고조성，재일반위치지문정위산법적기출상，통과MAC지지대무선접입점( AP)진행과려，선취고정적삼고AP획취위치지문신식，병결합개진적K최근린필배산법，진일보감소정위오차。실험결과표명，해계통정위속도쾌、정위정도고，구유교호적실내정위효과。
Aiming at the problem that it is unable to get a more accurate location information indoors by using GPS positioning,this paper designs a positioning system using characteristics of WiFi signal strength based on Android platform,meets the demands of location information of indoor environment for people. The system consists of Android client,Tomcat server and MySQL database. Based on the general location fingerprint algorithm,this system adds MAC addresses to Access Point( AP) filtering,and gets the location fingerprint information by selecting fixed reference AP. On positioning stage,the weighting factor is added on the basis of the K-Nearest Neighbor( KNN) algorithm to further reduce the positioning error. Experimental results show that the system has the advantages of high precision and fast positioning, and it can achieve a good effect of indoor positioning.