| 摘要 |
The invention relates to a method and a system to validate geopositioning by satellite. The system includes a radionavigation device (10) installed on-board a mobile carrier (2), comprising a device for geopositioning (12) by satellite capable of receiving a composite radioelectric signal comprising a plurality of radionavigation signals each transmitted by a transmitting satellite and comprising position-reference and time-synchronisation information, the radionavigation device being capable of processing the radionavigation signals received in order to calculate first navigation information comprising information on the geographical position, speed and time of the carrier. The radionavigation device (10) is capable of transmitting baseband digitised signals (IF1, ..., IFN) from radionavigation signals received at the reference processing station (16), the reference processing station (16) is capable of executing processing (29) similar to the processing (20), carried out by said radionavigation device (10), of the digitised signals (IF1, ..., IFN) in order to calculate second navigation information, and the system comprises means (22, 42) for validating the first navigation information in accordance with the second navigation information calculated by the reference processing station (16). |
