CAJ | 학술논문

节点的定位是无线传感器网络中的一种重要技术。提出了一种新的无线传感器网络定位算法——基于二次质心算法的定位算法，与以往的基于三边测量的加权质心方法不同，该算法改进了对未知节点位置的估算方法，一定程度上避免了因多次估算质心而产生的累积误差，提高了定位精度。仿真表明，该算法的定位精度较之前的三边测量方法提高了约19%。
절점적정위시무선전감기망락중적일충중요기술。제출료일충신적무선전감기망락정위산법——기우이차질심산법적정위산법，여이왕적기우삼변측량적가권질심방법불동，해산법개진료대미지절점위치적고산방법，일정정도상피면료인다차고산질심이산생적루적오차，제고료정위정도。방진표명，해산법적정위정도교지전적삼변측량방법제고료약19%。
Node localization is one of the key techniques in wireless sensor networks. In this paper,a new wireless sensor network localization algorithm based on twice centroid algorithm is proposed. This algorithm is different from the traditional weighted centroid localization algorithm based on trilateration algorithm. In this algorithm,the estimation method of unknown node location is improved,so as to avoid error accumulation caused by a large number of estimation to a certain extent and im?prove the localization precision. The simulation results show that the accuracy of this twice centroid localization algorithm is about 19% higher than that of the previous trilateration algorithm.