Method for providing location-based services based on GNSS satellite-based broadcasting services and ground-based broadcasting services

The invention provides a strategy for locating seamless and smooth switching and optimally providing location-based services based on GNSS satellite-based broadcasting services and ground-based broadcasting services, and aims at improving the reliability, availability and continuity of GNSS terminal position information. The technical purpose is to solve the problem that the satellite-based broadcasting services and ground-based broadcasting services have respective defects in actual application. An algorithm engine of satellite-based augmentation. services and an algorithm engine of ground-based augmentation services are run simultaneously, both engines can mutually inspect position information, ambiguity information and the like in the engines, and when the results are compatible, the better result is selected and output according to parameter precision; when the results are incompatible, the unreasonable engine is restarted according to a preset rule. The processing strategy has the advantages that when ne