Beidou satellite-based mountainous area bend vehicle anti-collision alarm method and system

The invention discloses a Beidou satellite-based mountainous area bend vehicle anti-collision alarm method and system. The method includes the following steps that: after vehicles enter a mountainous area, and the position and speed information of the vehicles is obtained through Beidou positioning; latitudes and longitudes are converted into a Gaussian plane coordinate system through coordinate transformation, a distance between the two vehicles is calculated; and when the two vehicles are too close, collision risk state estimation is performed, and alarm signals are emitted according to alarm rules. According to the Beidou satellite-based mountainous area bend vehicle anti-collision alarm method and system of the invention, information such as the position and speed information of the vehicles is measured in real time through the Beidou satellite, the operating states of the vehicles in a bend are calculated, and the collision risk state of the vehicles in the bend is estimated, and the effective alarm of the vehicles in the bend of the mountainous area can be realized.