CAJ | 학술논문

针对磁梯度张量直接反演跟踪方法对噪声十分敏感的问题，提出了基于正则化粒子滤波(RPF)的磁梯度张量跟踪方法。该方法建立了包括目标位置、速度和磁矩等状态变量的状态方程，给出了表征状态向量与磁梯度张量、磁场三分量测量值关系的量测方程，加入了重采样等克服粒子退化现象的方法，并通过 RPF方法克服粒子衰竭问题。通过仿真实验证明了 RPF跟踪方法的精度远远高于直接反演跟踪方法，具有更强的抗噪声干扰能力，可以有效完成磁梯度张量跟踪。
침대자제도장량직접반연근종방법대조성십분민감적문제，제출료기우정칙화입자려파(RPF)적자제도장량근종방법。해방법건립료포괄목표위치、속도화자구등상태변량적상태방정，급출료표정상태향량여자제도장량、자장삼분량측량치관계적량측방정，가입료중채양등극복입자퇴화현상적방법，병통과 RPF방법극복입자쇠갈문제。통과방진실험증명료 RPF근종방법적정도원원고우직접반연근종방법，구유경강적항조성간우능력，가이유효완성자제도장량근종。
Aiming at the problem that direct inversion tracking method of magnetic gradient tensor was too sen-sitive to noise,tracking method of magnetic gradient tensor based on RPF was put forward in this paper.The state equation was built,which included the state variables of position,velocity and magnetic moment of obj ect. The measurement equation represented the relation between state variables and measurement values of magnetic gradient tensor and three magnetic components.Resampling was used to prevent particle degradation,and the problem of particle lack was overcome by RPF.It was proved that the accuracy of the tracking method based on RPF was much higher than that of direct inversion tracking method by simulation experiment.