CAJ | 학술논문

针对野外大面积区域、不需要知道节点精确位置的应用场合，提出一种基于功率控制的节点定位算法。采用功率控制方式，分别由3个基站形成包含未知节点的3个圆环，通过计算由3个圆环形成的交叉区域的质心来实现未知节点的定位。仿真结果表明：在方圆800m范围内，算法的绝对定位误差可达到8m以下，可定位节点覆盖度可达99％以上。算法的定位精度和可定位节点覆盖度随划分的基站广播功率等级数的增大而提高。该算法不需要部署锚节点，节点间也无须进行信息交换，具有较高的实用性。
침대야외대면적구역、불수요지도절점정학위치적응용장합，제출일충기우공솔공제적절점정위산법。채용공솔공제방식，분별유3개기참형성포함미지절점적3개원배，통과계산유3개원배형성적교차구역적질심래실현미지절점적정위。방진결과표명：재방원800m범위내，산법적절대정위오차가체도8m이하，가정위절점복개도가체99％이상。산법적정위정도화가정위절점복개도수화분적기참엄파공솔등급수적증대이제고。해산법불수요부서묘절점，절점간야무수진행신식교환，구유교고적실용성。
For the field of a large area or the field which doesn’t need exact location,a node localization algorithm was proposed based on power control.With power control technology,three ring containing the unknown node was formed by the three base stations,and by calculating the centroid of the cross-region formed by the three rings location of the unknown node was achieved.Simulation results showed that within a radius of 800 meters,the absolute location error of the algorithm could be smaller than 8 m and the coverage was up to 99%.With the increase of the number of broadcast power level of base station,location accuracy and coverage also improved.The algorithm did not require the deployment of anchor nodes and information exchange between nodes,and was with high practicality.