【摘要】 利用二维实空间中Cayley-Menger行列式提供的距离几何约束条件,结合加权质心计算,提出一种基于距离几何约束的二次加权质心定位算法(DGC-TWCL)。Cayley-Menger行列式用于求解测距误差的优化解,从而可修正节点间的非精确距离。二次加权质心计算通过加权因子来体现锚节点在定位坐标确定中的影响程度。实验结果表明:DGC-TWCL具有较好的定位精度及算法可扩展性和鲁棒性。更多还原

【Abstract】 Taking Cayley-Menger determinant in the two-dimension real space as the distance geometry constraints,combined with the weighted centroid computing,a twice-weighted centroid localization algorithm based on distance geometry constraints(DGC-TWCL) was presented in this paper.C-M determinant was utilized to get the optimization results of distance measurements errors so that inaccurate distances among nodes were corrected to some extent.Twice-weighted centroid computation by weighted factors reflects that different anchor nodes have respective influence degrees in the process of determining the localization coordinates.The experimental results indicate that DGC-TWCL has better localization precision,algorithm scalability and robustness.更多还原