Multi-load time synchronization system applied to low-orbit satellite system

• Main Authors: TAN ZIZHONG, DING KAISHENG, CHEN RUIRONG, KE TENGLUN, JIANG QINGFU, LI ZHENZHEN, DENG XIAODONG, WU RONGGANG
• Format: Patent
• Language: Chinese; English
• Published: 23.05.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MULTIPLEX COMMUNICATION; TRANSMISSION

The invention discloses a multi-load time synchronization system applied to a low-orbit satellite system, which comprises an atomic clock and a clock taming unit thereof, a navigation signal receiving antenna, a transmitting antenna, a time-frequency integration unit, a time service control unit, a measurement and control transceiving unit, a power supply unit and other on-satellite loads, and the number of the on-satellite loads can be expanded as required. According to the system, satellite time information is calculated by receiving Beidou/GNSS satellite navigation signals, meanwhile, clock phase correction information and frequency correction information are received through satellite-ground and inter-satellite links, local clock taming and correction functions are completed, a reference clock and a synchronous clock which are accurate enough are provided, satellite multi-load time synchronization can be achieved, and time synchronization efficiency is improved. And meanwhile, the time synchronization bet