Method for combining two or more sets of precise point positioning (ppp) corrections including aligning ionospheric corrections

A method for generating transformed navigation corrections, the method comprising:

• generating, by a navigation correction system, navigation corrections by executing a first correction algorithm that sets one or more first parameters to arbitrary values;
• receiving, by the navigation correction system and from a different navigation correction system, independently generated reference corrections that are generated by the different navigation correction system that executes a second correction algorithm that sets one or more second parameters to arbitrary values, wherein the navigation corrections are incompatible with the independently generated reference corrections;
• solving, using the generated navigation corrections with the independently generated reference corrections, a system of at least two equations for observations, wherein the solving calculates an estimated delta value;
• and
• transforming, by the navigation correction system, a selected generated navigation correction by adjusting the selected generated navigation correction by the estimated delta value to generate a transformed navigation correction, and
• wherein the transformed navigation correction is compatible with the independently generated reference corrections.

A non-transitory computer readable medium having software encoded thereon, the software when executed by one or more computing devices operable to:

• generate navigation corrections by executing a first correction algorithm that sets one or more first parameters to arbitrary values;
• receive, from a different navigation correction system, independently generated reference corrections that are generated by the different navigation correction system that executes a second correction algorithm that sets one or more second parameters to arbitrary values, wherein the navigation corrections are incompatible with the independently generated reference corrections;
• calculate, using the generated navigation corrections with the independently generated reference corrections, an estimated delta values from a system of at least two equations;
• and
• transform a selected generated navigation correction by adjusting the selected generated navigation correction by the estimated delta value to generate a transformed navigation correction, and
• wherein the transformed navigation correction is compatible with the independently generated reference corrections.