| 摘要 |
The present invention relates to a method of applying a real-time ionospheric threat model of a global navigation satellite system (GNSS) augmentation system using a space weather forecasting system. More specifically, the present invention relates to a method of applying a real-time ionospheric threat model according to space weather rather than a worst threat model according to a prior art by determining a relation between space weather information and an ionospheric threat, which is a biggest error factor for the GNSS augmentation system, and utilizing the relation. According to the present invention, there is provided a technology which improves performance of a navigation system by mitigating the ionospheric threat and using an efficient modeling by utilizing the space weather information which is an external source. Since real-time space weather forecasting values are utilized, threat model values which are applied by a user are not set as a constant value but selected for respective steps. Therefore, a security level which corresponds to integrity information calculated by the user is lowered, thereby improving system availability. The system of applying a real-time ionospheric threat model of a GNSS augmentation system using a space weather forecasting system comprises: a space weather forecasting error statistical analysis module, a forecasting error bounding module, an ionospheric threat model applying module, a disturbance storm database, and a control unit. |
