Abstract: A method for determining a position of an object having a Global Navigation Satellite System (GNSS) receiver comprises receiving signals that are transmitted by GNSS transmitters positioned on board satellites positioned in view of the object; updating service data in the object, the service data including satellite clock data, satellite orbit data, satellite delay code bias data relating to delay code biases of the GNSS transmitters, and ionospheric model data indicating a state of an ionosphere; determining, based on the ionospheric model data, ionospheric delay data indicating corrections relating to delays of the signals, the delays of the signals resulting from passage of the signals through the ionosphere, and reception of the signals by the GNSS receiver; and determining a position of the object based on the signals, the satellite clock data, the satellite orbit data, the satellite delay code bias data, and the determined ionospheric delay data.

Abstract: A method for determining a position of an object having a Global Navigation Satellite System (GNSS) receiver comprises receiving signals that are transmitted by GNSS transmitters positioned on board satellites positioned in view of the object; updating service data in the object, the service data including satellite clock data, satellite orbit data, satellite delay code bias data relating to delay code biases of the GNSS transmitters, and ionospheric model data indicating a state of an ionosphere; determining, based on the ionospheric model data, ionospheric delay data indicating corrections relating to delays of the signals, the delays of the signals resulting from passage of the signals through the ionosphere, and reception of the signals by the GNSS receiver; and determining a position of the object based on the signals, the satellite clock data, the satellite orbit data, the satellite delay code bias data, and the determined ionospheric delay data.

Abstract: The invention concerns a real-time navigation method for locating a rover using three-carrier radio signals of three different frequencies to determine the position of a user, transmitted by satellites. The method comprises a first step for determining “extra-wide lane” carrier phase ambiguity, a second step for estimating “wide-lane” phase ambiguity, and a third step for resolving the phase ambiguity of one of the frequencies. An additional step consists in the application of real-time ionospheric corrections during the third step, these ionospheric corrections being based on a continuously updated ionospheric model of said ionospheric layer calculated by a fixed ground reference station combined with geodetic data calculated by a so-called master fixed ground reference station. The invention also concerns a system for implementing the method.

Abstract: The invention concerns a real-time navigation method for locating a rover using three-carrier radio signals of three different frequencies to determine the position of a user, transmitted by satellites. The method comprises a first step for determining “extra-wide lane” carrier phase ambiguity, a second step for estimating “wide-lane” phase ambiguity, and a third step for resolving the phase ambiguity of one of the frequencies. An additional step consists in the application of real-time ionospheric corrections during the third step, these ionospheric corrections being based on a continuously updated ionospheric model of said ionospheric layer calculated by a fixed ground reference station, combined with geodetic data calculated by a so-called master fixed ground reference station. The invention also concerns a system for implementing the method.