太原科技大学学报
太原科技大學學報
태원과기대학학보
JOURNAL OF TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
2015年
1期
18-22,23
,共6页
RSSI%无线传感器网络%三边测距定位%四边测距定位%机器人定位
RSSI%無線傳感器網絡%三邊測距定位%四邊測距定位%機器人定位
RSSI%무선전감기망락%삼변측거정위%사변측거정위%궤기인정위
trilateral localization algorithm%improved quadrilateral localization algorithm%reference of correcting RSSI%robot localization
基于接收信号指示强度的测距特性和三边测距定位原理,提出了应用于机器人定位的改进四边测距定位算法,引入加权质心定位算法的思想,通过距离因子控制各个锚节点对定位精度的影响,并将锚节点之间的距离和信号强度作为修正RSSI的参考值。仿真结果表明,该算法不仅可靠性高,有效避免了信息淹没现象,而且在不增加通信成本的基础上提高了机器人的定位精度。
基于接收信號指示彊度的測距特性和三邊測距定位原理,提齣瞭應用于機器人定位的改進四邊測距定位算法,引入加權質心定位算法的思想,通過距離因子控製各箇錨節點對定位精度的影響,併將錨節點之間的距離和信號彊度作為脩正RSSI的參攷值。倣真結果錶明,該算法不僅可靠性高,有效避免瞭信息淹沒現象,而且在不增加通信成本的基礎上提高瞭機器人的定位精度。
기우접수신호지시강도적측거특성화삼변측거정위원리,제출료응용우궤기인정위적개진사변측거정위산법,인입가권질심정위산법적사상,통과거리인자공제각개묘절점대정위정도적영향,병장묘절점지간적거리화신호강도작위수정RSSI적삼고치。방진결과표명,해산법불부가고성고,유효피면료신식엄몰현상,이차재불증가통신성본적기출상제고료궤기인적정위정도。
Based on the performance of received signal strength indicator( RSSI )and the principle of trilateration localization algorithm,an improved quadrilateral localization algorithm in robot localization is proposed. The im-proved algorithm,which introduced the idea of weighted centroid algorithm,affected the positioning accuracy through the control of each anchor node by the distance factor. What's more,the distance between anchor nodes and signal intensity is taken as the reference of correcting RSSI. The simulation shows that not only the information drown can be effectively avoided,but also the positioning accuracy of robot localization can be improved without in-creasing the communication cost.