公开(公告)号：US20240264315A1

公开(公告)日：2024-08-08

申请号：US18402023

申请日：2024-01-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Inone JOO ,  Cheon Sig SIN

IPC: G01S19/21 ,  G01S19/11 ,  G01S19/37

CPC classification number: G01S19/21 ,  G01S19/115 ,  G01S19/37

Abstract: An anti-jamming time synchronization method and apparatus for maintaining time synchronization between a global positioning system (GPS) and a satellite-based augmentation system (SBAS) are provided. The anti-jamming time synchronization method includes receiving a GPS signal from a GPS satellite using an omnidirectional antenna, receiving an SBAS signal from an SBAS satellite using a directional antenna, calculating measurement values of the GPS signal and the SBAS signal, decoding a GPS message of the GPS signal and an SBAS message of the SBAS signal, when the measurement values are values within a normal range, synchronizing time with GPS time based on a measurement value of the GPS signal and the GPS message, and when the measurement values are values beyond the normal range, synchronizing time with the GPS time based on a measurement value of the SBAS signal and the SBAS message.