Satellite common-view time synchronization method and system without communication interaction

• Main Authors: LYU HONGCHUN, XU WEN, CAO HUI, YANG SHAODONG, LIU CHANGYU
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; HOROLOGY; MULTIPLEX COMMUNICATION; PHYSICS; RADIO-CONTROLLED TIME-PIECES

The invention discloses a satellite common-view time synchronization method without communication interaction. The method comprises the following steps: pre-configuring a common-view site; determining a common-view relationship of the common-view site based on a satellite; calculating a clock error and an observation weight of a local receiver of the common-view station; calculating a clock error weighted average value of the local receiver of the common-view station; calculating a clock error of a local clock of the common-view station; and carrying out clock taming and time signal phase adjustment. The common-view satellite and the observation weight are determined through the satellite selection and weight determination algorithm, and the clock is adjusted based on the calculated clock error of the local clock of the common-view station, so that the ground time of each common-view station is synchronized with the GNSS system only through the common-view satellite, and the high-precision relative synchroniz