CAJ | 학술논문

为了满足室内高精度定位的需求，采用无线局域网物理层细粒度的信道状态信息来建立一个使用信号强度层次化排序集合的单信标定位算法。算法利用室内多径效应导致不同信道接收到的信道状态信息值不同的特性，来建立不同信道之间关系的指纹库，从而确定一个位置。实验结果表明仅仅使用单个信标的信道状态信息值的指纹定位算法的定位性能明显好于使用接收信号强度的定位算法，平均定位精度可以达到0．95 m。
위료만족실내고정도정위적수구，채용무선국역망물리층세립도적신도상태신식래건립일개사용신호강도층차화배서집합적단신표정위산법。산법이용실내다경효응도치불동신도접수도적신도상태신식치불동적특성，래건립불동신도지간관계적지문고，종이학정일개위치。실험결과표명부부사용단개신표적신도상태신식치적지문정위산법적정위성능명현호우사용접수신호강도적정위산법，평균정위정도가이체도0．95 m。
In order to meet the demand of high-precision indoor position,we adopt wireless fidelity physical fine-grained channel state information of 802. 11n to build a signal strength hierarchical sorting collections location algorithm using a single set of anchor. Different channel state information values received from different channels due to indoor multipath effect,which phenomenon can be used to build a fingerprint database from various channels,therefore confirm the position. The experimental results demonstrate that the algorithm with single anchor outperforms the algorithm with received signal strength indicator due to the good character of discrimination;its mean accuracy can reach 0. 95 m.