Method and system for real time navigation using satellite transmitted three-carrier radio signals and ionospheric corrections

A satellite navigation system for implementing the method according to any of the preceding claims, comprising:

• a plurality of satellites orbiting around the Earth, each of the satellites transmitting said three-carrier signals of different frequencies;
• at least one rover comprising:
• a receiver for receiving said three-carrier signals from said plurality of satellites;
• and
• integrated calculation means for performing determining an extra-wide lane ambiguity of the phase differences between said third and second carriers from a combination of pseudoranges using a single code value, estimating a wide lane ambiguity of the phase differences between said first and second carriers from said extra-wide lane ambiguity, determining ambiguity resolution of one of said carrier frequencies from said wide lane ambiguity, and integrating ionospheric corrections derived from a descriptive ionospheric model of a region of the ionosphere passed through by radio radiation of said three-carrier signals transmitted by said plurality of satellites;
• and
• a plurality of fixed ground reference stations, each comprising a receiver for receiving said three-carrier signals transmitted by said plurality of satellites, integrated calculation means for determining said descriptive ionospheric model of the ionospheric layer, and a transmitter for transmitting data corresponding to said ionospheric model to said receiving of said rover;
• and
• wherein at least one of said fixed ground reference stations is designated as a master station, said master station comprises a receiver for receiving said three-carrier signals transmitted by said plurality of satellites, means for calculating geodetic data, and a transmitter for distributing said geodetic data to said plurality of fixed ground reference stations.