CAJ | 학술논문

在海洋环境监测传感器网络中，应用改进的 DV-Hop 算法，提高传感器节点定位精度。该算法对原始 DV-Hop 算法做了两点改进，一是通过加权处理，修正定位节点平均每跳距离，由此得到更为准确的任意定位节点与锚节点的距离；二是通过泰勒级数和最速下降算法相结合，有效避免迭代不收敛的情况和三边测量法或多边测量法计算量大的缺点，减少节点运算时间，由此降低节点能量消耗。仿真验证，该算法能有效提高传感器节点的定位精度。
재해양배경감측전감기망락중，응용개진적 DV-Hop 산법，제고전감기절점정위정도。해산법대원시 DV-Hop 산법주료량점개진，일시통과가권처리，수정정위절점평균매도거리，유차득도경위준학적임의정위절점여묘절점적거리；이시통과태륵급수화최속하강산법상결합，유효피면질대불수렴적정황화삼변측량법혹다변측량법계산량대적결점，감소절점운산시간，유차강저절점능량소모。방진험증，해산법능유효제고전감기절점적정위정도。
In this paper, a modified DV-Hop algorithm is proposed for the marine environment monitoring sensor network, which improves the positioning accuracy of the sensor. Compared with the original DV-Hop algorithm, the modified one corrects unknown nodes per hop distance and gives more accuracy of the distance from any unknown nodes and anchor nodes by the weighted processing. By making use of advantages of the Taylor series and steepest descent algorithm, disadvantages of misconvergence and large amount in the multilateral measurement method are avoided and the energy consumption of the node is reduced. The effectiveness and advantage of the modified DV-HOP algorithm is demonstrated by the numerical simulations.