弹载磁导航中弹体磁化场建模研究

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中图分类号：TH76 文献标志码：A DOI：10.12305/j.issn.1001-506X.2025.04.28

Abstract：To achieve high-precision application geomagnetic navigation in projectile guidance，a magnetic field calculation model for projectile is proposed.The tetrahedral element is used to discretize the projectile model，and the magnetic induction intensity each discrete element at the measurement point is calculated by summing up the magnetic induction intensity around the projectile at any position.The calculation results the spherical shell analytical model and the analysis systems （ANSYS） simulation experiments the projectile model show that the relative errors the magnetization field calculation model the projectile are 0.42% and 0.55% ，respectively. The field experiment results the projectile scaling model show that the relative error between trends in the measured values and the calculated values the measurement points is 1.09% .The magnetic field calculation model the projectile is validated in three ways to accurately measure the magnetic induction intensity atany position around the projectile，indicating the effectiveness and feasibility the calculation model，which has high engineering practical value.

Keywords： geomagnetic navigation； magnetization field model； ANSYS simulation； numerical analysis spherical shell；experiment on projectile scaling model

0引言

随着近年来卫星拒止条件下弹箭导航技术的深入研究，地磁传感器凭借体积小、成本低、能够承受高冲击能力及具有自主无源和无累积误差等优点，使地磁导航成为当前研究热点[1-4]。（剩余12557字）