GPS timing system has been widely used in power system, especially the development of intelligent substation in recent years, the precision and function of GPS timing system put forward more and more high requirements.
In the implementation scheme of GPS timing system, there are two different synchronization methods according to the composition of GPS signals, one is pulse synchronization method, the other is serial synchronization method.GPS is called satellite time ranging navigation global positioning system.
GPS is a global, all-weather satellite radio navigation system that can provide real-time and long-term navigation information to a large number of users.GPS positioning has many advantages, such as high precision, low cost, high speed, strong real-time, with accurate timing, distance measurement, navigation and positioning functions.The GPS system is composed of three parts: space satellite part, ground control part and user equipment part. The three parts communicate through satellite signals, so as to provide timing, positioning, ranging and other services.
