Early warning information broadcasting method and system based on Beidou navigation signal

The invention discloses an early warning information broadcasting method and system based on a Beidou navigation signal. The method comprises the following steps: determining disaster information; encoding the disaster information to obtain broadcast information; sending the broadcast information to a Beidou operation and control center, so that the Beidou operation and control center injects the broadcast information into a satellite; the broadcast information is received by terminal equipment in the disaster area, and the terminal equipment is provided with a Beidou navigation module; the terminal device decodes the broadcast information and restores the dimension of the broadcast information, and calculates the distance from the place where the terminal device is located to the disaster center and the azimuth angle; and generating alarm information according to the distance from the location of the terminal device to the disaster center and the azimuth angle. 本申请公开了一种基于北斗导航信号的预警信息播发方法和系统，包括确定灾害信息；对灾害信息进行编码