Study on magnetic shielding effect of projectile and target motion state on magnetic detection

DOI:	10.11809/bqzbgcxb2023.12.002
Keywords:	buried ammunition; magnetic shielding; magnetic characteristic signal; simulation; target orientation
Abstract:	In order to realize the detection ability of the buried munitions on ferromagnetic targets, the magnetic shielding characteristics of the buried munitions are simulated and analyzed. Simulation software is used to conduct two dimensional and three dimensional modeling and simulation for the hidden missile body, and the influence of the material of the missile body, the size of the opening hole, the orientation of the opening hole and the motion state of the target on the magnetic shielding characteristics of the missile body is analyzed. The results show that when the orientation of the opening is parallel to the external magnetic field, the magnetic induction intensity increases in pairs with the diameter of the opening hole. When the orientation of the opening is perpendicular to the external magnetic field, the magnetic induction intensity at the opening is the smallest, and gradually increases with the decrease of the included Angle, the velocity of the target does not affect the amplitude of its magnetic characteristic signal. The magnetic characteristic signals generated by the moving target and the geomagnetic field at different angles are simulated and verified by acquisition experiments. The variation curve is obtained, which provides a reference for the design of subsequent target recognition algorithm for the buried missile body.
Issue:	Vol. 44 No. 12 (2023)
Published:	2023-12-28
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