微型机与应用
微型機與應用
미형궤여응용
MICROCOMPUTER & ITS APPLICATIONS
2014年
7期
80-82,86
,共4页
赵静%王忠鹏%安一然%王忠明
趙靜%王忠鵬%安一然%王忠明
조정%왕충붕%안일연%왕충명
机场候机大厅%传播模型%三维定位%最小二乘法%最小均方差
機場候機大廳%傳播模型%三維定位%最小二乘法%最小均方差
궤장후궤대청%전파모형%삼유정위%최소이승법%최소균방차
airport waiting hall%signal propagation model%three-dimensional location%least-squares approach%minimum mean squares error
为了满足航空旅客在机场候机大厅的位置服务需要，同时为了降低AP（Access Point）部署的高度对定位的影响，提出了一种基于信号强度和传播模型的三维定位技术。该方法首先采用最小二乘法确定传播模型的参数，再使用最小均方差实现定位。实验结果表明，该算法的误差在3 m 内，准确率达83.36%，能够满足旅客在机场候机厅内位置服务的需要。
為瞭滿足航空旅客在機場候機大廳的位置服務需要，同時為瞭降低AP（Access Point）部署的高度對定位的影響，提齣瞭一種基于信號彊度和傳播模型的三維定位技術。該方法首先採用最小二乘法確定傳播模型的參數，再使用最小均方差實現定位。實驗結果錶明，該算法的誤差在3 m 內，準確率達83.36%，能夠滿足旅客在機場候機廳內位置服務的需要。
위료만족항공여객재궤장후궤대청적위치복무수요，동시위료강저AP（Access Point）부서적고도대정위적영향，제출료일충기우신호강도화전파모형적삼유정위기술。해방법수선채용최소이승법학정전파모형적삼수，재사용최소균방차실현정위。실험결과표명，해산법적오차재3 m 내，준학솔체83.36%，능구만족여객재궤장후궤청내위치복무적수요。
To provide location-based service (LBS) in airport waiting hall, a three-dimensional location estimation method based on received signal strength and signal propagation model is proposed. Least-square approach has been applied to determine parameters of signal propagation model obtained in the first step, minimum mean squares error (MMSE) method is applied to estimate the position of target node. Compared with the two-dimensional location algorithms being widely used now, the three-dimensional location method takes into account the APs deployment highly influence on positioning, which is more suitable for this particular scene. Experimental results show that this method could greatly improve accuracy and precision, and the accuracy rate could reach 83.36% within error distance of 3 meter, so it′s an applicable technology for LBS in airport waiting hall.
