计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2014年
17期
191-194,222
,共5页
室内定位%无线网络%最小二乘支持向量机%卡尔曼滤波
室內定位%無線網絡%最小二乘支持嚮量機%卡爾曼濾波
실내정위%무선망락%최소이승지지향량궤%잡이만려파
indoor location%wireless network%least square support vector machine%Kalman filter
为了提高室内节点的定位精度，提出一种基于权值参数实时更新的室内定位算法。选择3个最能反映待定位点信息的访问接入点，实时获取测距模型的参数，并采用最小二乘支持向量机对测距进行补偿，得到距离权重，三边定位算法根据权重对节点进行定位，并对计算中的距离进行加权处理，采用卡尔曼滤波法对定位误差的进行校正。实验结果表明，该算法可以较好地降低环境变化和测量误差对定位的不利影响，提高了室内节点的定位精度。
為瞭提高室內節點的定位精度，提齣一種基于權值參數實時更新的室內定位算法。選擇3箇最能反映待定位點信息的訪問接入點，實時穫取測距模型的參數，併採用最小二乘支持嚮量機對測距進行補償，得到距離權重，三邊定位算法根據權重對節點進行定位，併對計算中的距離進行加權處理，採用卡爾曼濾波法對定位誤差的進行校正。實驗結果錶明，該算法可以較好地降低環境變化和測量誤差對定位的不利影響，提高瞭室內節點的定位精度。
위료제고실내절점적정위정도，제출일충기우권치삼수실시경신적실내정위산법。선택3개최능반영대정위점신식적방문접입점，실시획취측거모형적삼수，병채용최소이승지지향량궤대측거진행보상，득도거리권중，삼변정위산법근거권중대절점진행정위，병대계산중적거리진행가권처리，채용잡이만려파법대정위오차적진행교정。실험결과표명，해산법가이교호지강저배경변화화측량오차대정위적불리영향，제고료실내절점적정위정도。
In order to improve the localization precision, a novel indoor localization algorithm based on weight parameter real-time updating is proposed in this paper. Three APs which can best explain the information of object are selected, and then the parameters of range model are updated in a real-time way, and the least square support vector machine is used to correct the range error to obtain the distance weights, the localization is obtained by using triangle-based localization algo-rithm based on distance weights and the localization error is corrected by Kalman filter method. The experimental results show that the proposed algorithm can reduce the error caused by surroundings and signal strength, and it has improved the higher localization precision.
