Beidou and GPS can be connected together

According to the Russian Satellite News Agency, the All-Russian Institute of Physics and Radio Technology Measurement Science said that the world's four major satellite navigation systems, the United States' Global Positioning System (GPS), Russia's GLONASS, Europe's Galileo and China's Beidou are It is possible to discuss using a uniform time standard.
At present, each navigation system is provided by a time-based center of each country to provide a time base for unified timing. The reference time for the Russian GLONASS satellite navigation system is Moscow Standard Time. This time it is proofread every day with the Paris standard. The world's four major satellite navigation system operators discussed the issue of using uniform time standards at a meeting held in Vienna on June 20.
The Information Services Division of the All-Russian Institute of Physics and Radio Technology Measurements said: "The issue of introducing new reference time standards is discussed, which will ensure faster data exchange during system timing synchronization of GNSS."
According to the All-Russian Institute of Physics and Radio Technology Measurements, the national time stamps for all global satellite navigation systems, including GLONASS, are currently associated with Coordinated Universal Time (UTC).
The first issue that raised the issue of transitioning the time of all satellite navigation systems to a single time standard was the European representative. They put forward their own views in the summer of 2017. At the end of 2017, they proposed the creation of Multi GNSS Ensemble Time or GNSS Time Coordinated.
The proponent believes that this is very necessary because there is a slight difference in the time of the stars on different navigation systems. Although the difference is only a few nanoseconds, during this period, the satellite has already traveled a long distance, so when using multiple navigation systems, special corrections are needed to compensate for the time difference.
As we all know, building a global satellite navigation system is a very large project. At present, there are only a few countries in the world that can develop and produce satellite navigation systems by themselves. At present, there are four satellite positioning systems in the world, namely the US GPS satellite navigation system, the Russian GLONASS satellite navigation system “Glonas”, the “Galileo” system under construction in Europe and the “Beidou” satellite navigation system in China.
In order to build its own military superiority, the United States took the lead in building its own global satellite navigation system. In 1973, the US Department of Defense began to implement the construction of a GPS system. After more than 20 years of research and launch missions, it cost nearly $20 billion before and after 1994. In March, the United States officially built the GPS global satellite positioning system, and then relied on its own technological leadership to occupy the global market.
At present, the GPS system consists of 24 satellites and 4 backup satellites with a total of 28 satellites. These satellites are medium-Earth orbit (MEO) satellites, distributed in 6 orbital planes at 20,200 km high, with an orbital inclination of 55. °, each track has 4 satellites, which can ensure that there are enough "visible" satellites (at least 4) in any place in the world. The current GPS civilian accuracy is about 10 meters, and it has been upgraded.
Russia's "GLONASS" satellite navigation system inherits the research and development results of the former Soviet Union. In 1993, it began to establish its own global satellite navigation system. Until 1995, it cost more than 3 billion US dollars to complete the "GLONASS" navigation satellite. Networking of system constellations.
In fact, the Russian "Glonass" satellite system has many similarities with the US GPS. It is also composed of 24 satellites. The other principles and schemes are similar to GPS. However, the "GLONASS" 24 satellites are distributed in 3 On the orbital plane, the three orbital planes are separated by 120°, each satellite is running in a 19,100-kilometer-high orbit. However, due to the short life and instability of the Russian "Glonass" satellite, Russia has been Keep the number of satellites in the system at 30 or more to improve stability.
China's "Beidou" satellite is not similar to the United States and Russia. In terms of the principle of "post-development advantage", it must be much more advanced in design and concept than the US-Russian satellite. At present, the latest Beidou-3 satellite system has been launched. It is expected that by 2020, Beidou 3 will be composed of 35 satellites, including 5 GEO satellites, 27 medium-Earth orbit MEO satellites and 3 IGSO satellites. The area is covered and will be much better than GPS in terms of accuracy and function.
The US GPS, Galileo in Europe, GLONASS in Russia, and China Beidou are undoubtedly the "Four King Kong" in the global satellite navigation system. In addition, our Beidou is also the only navigation system in the world consisting of three orbiting satellites.
Compatibility is not a merger but not a merger. I am worried that Beidou can be saved by gps. Compatible with the easy-to-understand simple understanding is that the gps device can understand the data sent by Beidou to navigate, and Beidou can understand the data sent by gps to navigate.
This compatibility is also to make Beidou wider and better serve the global public. After the Beidou and GPS terminals are compatible, this means that users can switch to different satellite navigation systems, whether they are GPS terminals or Beidou users. It is no longer a single navigation system that can be used by everyone.
Beidou is compatible with GPS, which will bring great changes to our aerospace industry. It is an important cornerstone for the development of our aerospace industry. The two have strong cooperation and can fundamentally enhance China's national defense strength.