A high-precision ground-based timing system is an effective and high-precision transmission of time and frequency signals through a ground-based wired network. The biggest difference between ground-based and space-based systems is that one is wired and the other is wireless; Compared to space-based timing, ground-based timing has higher accuracy and more stability. However, space-based timing is easily affected by the environment and has slightly lower accuracy. Nevertheless, space-based timing is currently the most commonly used and universal timing method, and it is also a cost-effective timing method.

Overview of high-precision timing technology

The current two timing technologies refer to the core technologies of space-based Beidou (GPS) and ground-based Beidou. The higher the timing accuracy, the higher the accuracy of navigation and positioning. At present, the civilian GPS L1 timing accuracy in the United States is 30ns effective value, with a positioning accuracy of 10 meters. The US military GPS timing accuracy can reach 10 nanoseconds, with a positioning accuracy of about 2 meters, but it is only provided for use by the US military; The timing accuracy of China's Beidou second-generation satellite signal is 50 nanoseconds, and the navigation positioning accuracy reaches 10 meters; Our country's ground-based time-frequency synchronization equipment achieves a timing accuracy of 10 nanoseconds and a corresponding positioning accuracy of 2 meters.

In order to overcome the problems of the PNT system for space-based satellite navigation, positioning, and timing, such as being easily affected by terrain, terrain, and weather conditions, and being susceptible to various electronic interferences, it is difficult to maintain it in case of malfunctions. To achieve "sky earth complementarity", countries and regions such as Russia, the United States, Japan, and the European Union have been developing ground-based timing technology for many years. Compared to this, China's timing technology is relatively backward. Therefore, China has also clearly stated in document No. 8 of 2013 that "timely initiation of the construction of a new generation of timing system, support for the development of ultra precision time-frequency technology, and gradually form a pattern of joint development of high-precision satellite timing system and high-precision ground-based timing system." From this, it can be seen that the significance and responsibility of conducting China's own ground-based timing technology research and building a ground-based timing system as soon as possible are equally significant.

Site selection for high-precision foundation timing system

The main function of China's ground-based timing system is to broadcast standardized time-frequency signals through various means, providing comprehensive support for the national economy and defense construction. After being determined by the National Time Service Center of our country, the ground-based time service system has been implemented in the Bazhou area. The construction site of the base is located at Baotou Lake in Korla City, which is very suitable for establishing a ground-based time service system.

Introduction to LIXINGSIFANG Technology Time Service System

Exploring and gradually promoting the construction of high-precision ground-based timing system infrastructure is the fundamental support for ensuring the implementation of national key tasks and leading future industrial development. As a professional manufacturer of timing systems, Xingqi Technology has a rich range of timing products and customers all over the country. Especially in terms of timing equipment, time synchronization servers, clock synchronization systems, mother and child clock systems, GPS satellite synchronous clocks and other timing products, it has a super high cost performance ratio and is one of the few manufacturers in China that can provide comprehensive timing products.