Distributed filtering global positioning and strapdown inertial navigation system combined navigation method

The invention belongs to the field of combined navigation and satellite navigation, and particularly relates to a combined satellite navigation positioning method with a combined correcting function. In a distributed filtering global positioning and strapdown inertial navigation system combined navigation method, an antenna unit (1), a radio-frequency front-end unit (2), a signal capturing unit (3), a signal tracking unit (4), a bit synchronizing and frame synchronizing unit (5), an inertia measuring unit (6), a strapdown resolving unit (7), an observed quantity converting unit (8), a combined filtering unit (9) and a correcting triggering unit (10) are used. Due to the adoption of the method, the kinesis and interference resistance of a global positioning subsystem are improved, the positioning accuracy of a combined system is further improved, and the working performance of a system in a complex environment is enhanced.