CAJ | 학술논문

为使 WiFi 位置指纹数据库，不在定位区域 WiFi 环境发生改变时，出现位置指纹过时现象，设计一种更新算法。该算法使用用户的反馈数据，考虑了 AP 信号不稳定情况下 AP 新增与撤销的检测问题；消除了手机热点等临时 AP 对传统更新算法的影响；最终通过检测 AP 位置移动等引起的 RSS 改变，加速位置指纹数据库的更新。实验结果表明，在实际环境中该算法在指纹数据库的更新效率上优于传统更新算法。
위사 WiFi 위치지문수거고，불재정위구역 WiFi 배경발생개변시，출현위치지문과시현상，설계일충경신산법。해산법사용용호적반궤수거，고필료 AP 신호불은정정황하 AP 신증여철소적검측문제；소제료수궤열점등림시 AP 대전통경신산법적영향；최종통과검측 AP 위치이동등인기적 RSS 개변，가속위치지문수거고적경신。실험결과표명，재실제배경중해산법재지문수거고적경신효솔상우우전통경신산법。
We propose an update algorithm for Wi-Fi location fingerprint database will not occur the location fingerprint outdate situation when Wi-Fi environment in location area changes.This algorithm uses feedback data from users and takes APs adding and revocation detection issue in circumstance of AP signal unstable into account,eliminates the impact of temporary AP such as mobile phone hotpot on traditional update methods.Finally,this algorithm accelerates the location fingerprint database’s update by detecting the RSS changes caused by AP location moving.Experimental results show that in actual environment this algorithm is superior to the traditional update algorithms on update efficiency of fingerprint database.