The invention relates to the field of
satellite navigation and low-
orbit satellite navigation enhancement service application, and provides a navigation positioning resolving method based on high, medium and low-
orbit mixed
constellation fusion. According to the method, the working characteristics and operation
modes of low-
orbit navigation
satellite constellations are fully analyzed according to the requirements of low-orbit navigation satellite receiving and positioning
processing engineering implementation, and the dynamic satellite
selection method with the optimal
geometric configuration is innovatively provided according to the bottlenecks that the low-orbit navigation constellations are large in
constellation scale, high in operation speed, large in
geometric configuration change and the like. According to the method, positioning participating satellites are selected by taking geometric accuracy factors as a criterion in a geometric accuracy factor pre-evaluation mode, so that the accuracy and robustness of geometric configurations of the positioning participating satellites are ensured, and original satellite parameter support is provided for high, medium and low orbit
constellation fusion positioning; the method is of great significance to development of
satellite navigation receivers compatible with low-orbit constellations and construction and application of more ubiquitous high, medium and low-orbit collaborative navigation systems in China.