Precision data adaptive partition broadcasting method and system

The invention relates to the technical field of navigation satellites, and provides a precise data adaptive partition broadcasting method and system, and the method comprises the steps: obtaining precise correction data streams of a global navigation satellite system satellite and regional atmosphere, and decoding the precise correction data streams; performing information calculation on global navigation satellite system satellites and near-earth orbit satellites in combination with ground service area grid division so as to adaptively screen the precise correction data streams; and recoding the precision correction data stream after the adaptive screening, and broadcasting the precision correction data stream after the adaptive screening in a subarea manner through the near-earth orbit satellite. According to the invention, available GNSS satellites in an area can be adaptively selected, useless GNSS satellite data can be eliminated, and a precise correction data reduction effect can be realized. And moreov