Geomagnetism generalization method and device

The invention discloses a geomagnetism generalization method and device. The method includes acquiring the position information of a plurality of reference geomagnetic stations and the position information of the point to be measured in the geomagnetism generalization region, obtaining the distance information and the position difference information between each reference geomagnetic station and the point to be measured according to the position information of each reference geomagnetic station and the position information of the point to be measured, obtaining the weight value of each reference geomagnetic station according to the distance information and the position difference information between each reference geomagnetic station and the point to be measured, and obtaining the observation data of the point to be measured according to the weight values of the plurality of reference geomagnetic stations and the observation data of the plurality of reference geomagnetic stations. The method fully considers the influence of the position information of different reference geomagnetic stations on the generalization precision, the determination of the weight values with the participation of the position difference information can better reflect the difference of the difference reference geomagnetic stations, so that the generalization precision of the geomagnetic diurnal variation data can be significantly improved.