地磁导航基准图三分量数学仿真方法研究

针对现有地磁场磁测数据尤其是三分量数据难以满足地磁导航技术研究需求的问题,同时为了给后续的地磁导航技术研究提供一种较为真实的仿真验证手段,提出一种使用三分量数值计算的方法用以实现地磁导航基准图的数学仿真。使用Maxwell软件对磁性体磁化磁场进行数值计算来仿真静态磁场三分量的空间分布,辅以地磁场的时间变化模型和误差组合模型,通过径向基函数法插值后,得到数学仿真的地磁导航基准图。计算结果表明该方法可以对地磁场进行高精度的数学仿真,可以为地磁导航相关技术的研究提供试验验证平台。

Three-component Mathematic Simulation Method for Geomagnetic Navigation Reference Map

Data of geomagnetic field survey,especially the three-component data,can not meet the requirement of geomagnetic navigation research currently.A mathematic simulation method by calculating geomagnetic three-component value was proposed for geomagnetic navigation reference map in order to provide a rather real verification method for the next geomagnetic navigation technology research.Using Maxwell software to calculate the numerical value of magnetizing field about the magnetic substance,the space distributing of three-component static magnetic field was simulated.Adding geomagnetic time variation model and combinatorial error model,geomagnetic navigation reference map could be simulated after interpolated by radial basis function(RBF) method.Calculated result indicates that this simulation method has a high accuracy and can provide a verification platform for geomagnetic navigation research.