中圖分類號： TP393
文獻標識碼： A
DOI： 10.19358/j.issn.2097-1788.2022.04.011
引用格式： 李鋒，魏楚強. 無線傳感網絡分段線性融合定位算法[J].網絡安全與數據治理，2022，41(4)：72-77.

A piecewise linear fusion localization algorithm for wireless sensor networks

Abstract： In order to achieve accurate positioning of mobile nodes, a mobile node positioning model and algorithm based on APIT-3D is proposed, which integrates 3D DVHop segment skipping distance and RSSI ranging technology. On the basis of calculating the distance between the internal measurement point and the nearest vertebral surface, the position of the internal measurement point is judged by the volume of vertebroplasty, effectively avoiding the "In To Out" and "Out To In" errors. After determining the overlapping region of the vertebral body, the node position is calculated by the least square method combined with the spatial piecewise linear fitting. Simulation results show that the proposed algorithm can locate mobile nodes at 25th, 50th and 70th with the deviation values of 1.81 m，2.45 m and 3.32 m respectively, and can judge the motion trend, track the moving target and describe the motion trajectory, providing algorithm reference and innovation for wireless sensor network location.

Key words : wireless sensor networks；APIT-3D；In-To-Out；Out-To-In；segmental linear fitting