由于地磁变化场会影响地磁场的测量,从而对地磁导航的精度和可靠性产生一定的负面影响,本文通过设计飞行器地磁匹配导航仿真实验,对地磁变化场中主要因素的影响程度进行了研究。从仿真结果分析可以看出,不同磁场成分对地磁导航的影响不尽相同,因此在地磁导航中需要对变化场进行补偿或者采用优良的匹配算法,以进一步提高地磁匹配导航的精度。 Because the change of geomagnetic field will affect the measurement of geomagnetic field, which will have a negative effect on the accuracy and reliability of geomagnetic navigation. In this paper, the influence degree of the main factors in geomagnetic change field is studied by designing the geomagnetic matching navigation simulation experiment. It can be seen from the simulation results that different magnetic field components have different effects on geomagnetic navigation. Therefore, it is necessary to compensate for the change field in geomagnetic navigation or to adopt an excellent matching algorithm to further improve the accuracy of geomagnetic matching navigation.