Beidou and GPS (global positioning system) double-system wide-lane carrier phase mixed-frequency inter-satellite differential combination method

The invention relates to a Beidou and GPS (global positioning system) double-system wide-lane carrier phase mixed-frequency inter-satellite differential combination method, which relates to the technical field of a satellite positioning system and the positioning measurement. The method comprises the following steps of receiving observation data transmitted by a Beidou system and a GPS system to a user receiver through respective satellites by utilizing the user receiver; respectively determining integer ambiguity of a wide-lane carrier phase of each of the Beidou system and the GPS system through a carrier phase observation equation; restoring the integer property of an inter-satellite differential wide-lane ambiguity parameter of the Beidou system and the GPS system; determining a distance from the user Beidou/GPS receiver to a satellite according to a wide-lane carrier phase observation value Phi and a wide-lane ambiguity N. By adopting the method, the inter-satellite differential is carried out for different-frequency wide-lane carrier phases of different systems, so that the integer property of the double-system inter-satellite differential wide-lane ambiguity parameter is maintained, and the problem of how to realize the high-precision dynamical positioning when the quantity of the observation satellites of the single Beidou system and the single GPS system is inadequate can be solved.