SBASにおける高速補正メッセージの削減

抄録

The SBAS is the standard augmentation systems which ensure the integrity of navigation by providing augmentation information via satellite broadcast. Due to GNSS vulnerabilities, the signal authentication is being discussed to be added to the augmentation system including SBAS as a countermeasure against spoofing attacks. Here the authors propose a method to reduce Fast Correction messages of SBAS to secure the bandwidth for authentication information, because the current SBAS implementation does not have such vacant bandwidth. The method is compatible with the current system in terms that no performance degradation is expected.