Source | International GNSS Testing and Evaluation Center Official Website
IGAMS has great potential
 
The International GNSS Monitoring and Evaluation System (iGMAS) is the first monitoring platform in the world that covers the four major navigation systems. It is the first scientific project initiated and led by China under the framework of the United Nations, the first globally distributed satellite navigation system tracking network, and the first open system in the world to provide high-precision services for the four systems.

If you want to obtain first-hand monitoring data of satellite navigation systems, you can obtain it through iGMAS' detection and evaluation center. The monitoring and evaluation center generally starts from the perspective of satellite navigation users, conducts real-time detection and evaluation of the performance of the four major satellite navigation systems, and accumulates relevant information independent of the operating system through long-term detection and evaluation, providing a basis for system maintenance and development decisions. In other words, whether you are a professional researcher or an ordinary bystander, you can obtain the navigation system performance information you need through the testing and evaluation center. Of course, whether it can be understood is another topic.
What does the Monitoring and Evaluation Center mainly do?

Constellation state parameters mainly describe the overall operational status of the navigation constellation and the health status of each satellite. Generally, one can understand the positioning accuracy of a satellite in the user's area, as well as the satellite's in orbit position and velocity;
The spatial signal parameters mainly describe the characteristics of navigation signals in frequency domain, time domain, etc;
The spatial information parameters mainly describe the information carried by navigation messages, and the orbit and clock error calculated by broadcast ephemeris can be used to indirectly evaluate the positioning, velocity measurement, and timing performance of the system;
Service performance parameters are mainly used to evaluate the service performance of navigation systems within the service area, including descriptions of positioning, speed measurement, and timing accuracy.

With the global satellite navigation system entering the era of multi GNSS, the trend towards compatibility and interoperability of GNSS systems in various countries has become inevitable. The International GNSS Monitoring and Evaluation System can not only monitor and evaluate the open service performance of various GNSS systems, but also promote compatibility and interoperability among GNSS systems of different countries.

It can be seen that the work of the Monitoring and Evaluation Center is improving and promoting the sustainable development of GNSS systems, which has a profound impact on the overall performance improvement of GNSS systems worldwide. The existence of the monitoring and evaluation center also facilitates us to quickly determine whether the satellite navigation system is reliable.