论文标题
调查定位精度与传感器阵列之间的关系
Investigation of the Relationship Between Localization Accuracy and Sensor Array
论文作者
论文摘要
磁定位方法已被广泛研究，该方法主要基于磁源产生的磁场的准确映射。许多因素会影响实验中的定位准确性。因此，本文倾向于通过不同的实验研究定位精度与传感器阵列之间的关系。该系统使用小磁铁作为磁源，并基于磁性偶极模型建立磁性定位系统的数学模型以估计磁场。 Levenberg-Marquardt算法用于构建磁定位目标函数以进行比较实验。实验结果表明：当传感器均匀分布在磁铁周围时，定位精度高于传感器阵列的其他布局，平均定位误差为0.47mm，平均方向误差为0.92度。
The magnetic localization method has been widely studied, which is mainly based on the accurate mapping of the magnetic field generated by magnetic sources. Many factors affect localization accuracy in the experiment. Therefore, this paper tends to study the relationship between localization accuracy and sensor array with different experiments. This system uses a small magnet as the magnetic source, and the mathematical model of the magnetic positioning system is established based on the magnetic dipole model to estimate the magnetic field. The Levenberg-Marquardt algorithm was used to construct a magnetic positioning objective function for comparison experiments. Experimental results show:When the sensor is evenly distributed around the magnet, the positioning accuracy is higher than other layout of the sensor array, the average localization error is 0.47mm and the average orientation error is 0.92 degree.
