Error Analysis of Nearest Point Estimation in Magnetic Dipole Model
Aiming at the problem of nearest point estimation for ferromagnetic targets,the error characteristics of estimating the closest point to the target with the maximum total magnetic induction on a straight path were analyzed.Firstly,the magnetic dipole theory was used to model the detection process,and the function relation-ship between the magnetic induction intensity and the position on the linear path was obtained.The results of pole distribution showed that there was only one maximum point of magnetic induction on the linear trajectory,and the maximum point was only affected by the relationship between the direction of the target magnetic mo-ment and the position of the linear trajectory.Finally,the maximum relative error of the proposed method was 3.08%,and the distribution diagram and variation characteristics of the error with the influencing factors were given.The results of error characteristics could provide a basis for improving the nearest point estimation meth-od,so as to improve the damage ability of proximity fuze.
magnetic dipolemagnetic anomaly detectionproximity fuzenearest point estimation
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维普
