ABSTRACT
ABSTRACT: The Advanced Broadcasting System-Satellite (ABS-S) technical specification is an independent research and development satellite radio and television signal transmission technology in China. In this paper, we first introduce the development situation of satellite broadcasting technologies and then analyze the physical layer interface specifications of ABS-S. A positioning system in ABS-S is mainly studied because the system needs to know the user’s position to insure they are in the rural area. Using the position management system, the security and stability of the total system have been improved to satisfy the demands in China.
