CAJ | 학술논문

针对 DV-Hop 定位算法中在计算未知节点到锚节点距离时产生较大误差的问题，提出了一种改进的 DV-Hop 算法。改进算法对全网平均每跳距离和局部平均每跳距离进行了加权处理，得到了未知节点的平均每跳距离，又提出了一种改进的加权最小二乘法来得到未知节点的坐标，减小了节点的定位误差。仿真结果表明，在不需要增加额外的硬件设施的基础上，改进算法的定位精度相比于原算法明显提高。
침대 DV-Hop 정위산법중재계산미지절점도묘절점거리시산생교대오차적문제，제출료일충개진적 DV-Hop 산법。개진산법대전망평균매도거리화국부평균매도거리진행료가권처리，득도료미지절점적평균매도거리，우제출료일충개진적가권최소이승법래득도미지절점적좌표，감소료절점적정위오차。방진결과표명，재불수요증가액외적경건설시적기출상，개진산법적정위정도상비우원산법명현제고。
Aiming at the problem that the DV-Hop algorithm would produce fairly large errors when calculating the distances between unknown nodes and the anchor nodes, an improved DV-Hop algorithm is proposed. The improved algorithm implements weighted processing on the average hop distance and the local average hop distance of the whole network, thus to acquire the average hop distance of unknown nodes. Then an improved weighted least-square algorithm for the coordinates of unknown nodes is proposed, and the proposed algorithm could reduce the position errors of the nodes. The simulation results show that the improved algorithm could, with on addition of hardwares, obviously improve the localization accuracy as compared with the original algorithm.