计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2014年
7期
2278-2282
,共5页
三边测量%接收信号强度%无线射频识别%无线传感器网络%信标节点
三邊測量%接收信號彊度%無線射頻識彆%無線傳感器網絡%信標節點
삼변측량%접수신호강도%무선사빈식별%무선전감기망락%신표절점
trilateral measurement%received signal strength indicator (RSSI)%radio frequency identification%wireless sensor network%beacon nodes
综合无线射频识别与无线传感器网络的融合技术，提出了一种改进的三边测量定位算法。当信标节点数量较少，未知节点利用接收信号强度指示（RSSI）技术未找到与信标节点的3个距离值时，采用定位向量和未知节点的平均移动速度，计算求出新的未知节点到信标节点的距离值。实验结果表明，该算法有效地弥补了射频信号覆盖不完全和空隙区域的定位，提高了运动轨迹的定位精度和覆盖范围。
綜閤無線射頻識彆與無線傳感器網絡的融閤技術，提齣瞭一種改進的三邊測量定位算法。噹信標節點數量較少，未知節點利用接收信號彊度指示（RSSI）技術未找到與信標節點的3箇距離值時，採用定位嚮量和未知節點的平均移動速度，計算求齣新的未知節點到信標節點的距離值。實驗結果錶明，該算法有效地瀰補瞭射頻信號覆蓋不完全和空隙區域的定位，提高瞭運動軌跡的定位精度和覆蓋範圍。
종합무선사빈식별여무선전감기망락적융합기술，제출료일충개진적삼변측량정위산법。당신표절점수량교소，미지절점이용접수신호강도지시（RSSI）기술미조도여신표절점적3개거리치시，채용정위향량화미지절점적평균이동속도，계산구출신적미지절점도신표절점적거리치。실험결과표명，해산법유효지미보료사빈신호복개불완전화공극구역적정위，제고료운동궤적적정위정도화복개범위。
Radio frequency identification and wireless sensor network were integrated,an improved trilateral measurement locali-zation algorithm was put forward.When the number of beacon node was small,the unknown node made use of the received sig-nal strength indicator (RSSI)technique,three beacon node distance values could not be found,the location of vector and the average speed of the unknown node were used to calculate new distance value from the unknown node to the beacon node.The experimental results showed the improved localization algorithm effectively made up for the incomplete radio-frequency signal coverage and the positioning of blank area,increased the traj ectory of the positioning accuracy and coverage.
