Once the United States turns off GPS, the global missile will become "blind", only 2 countries are exceptions, which two countries?Why aren't these two countries afraid of the United States turning off GPS?
Since the advent of the Global Positioning System (GPS) in the United States, it has been widely used around the world with its high-precision, all-weather coverage and other high-quality performance, and has played an important role in the development of many industries such as automobiles and logistics, and can be called the absolute dominance of the global navigation field.
What's more, the missile systems of many countries also rely on GPS for precise target positioning and guidance, and once the United States turns off or jams the GPS signal, the accuracy of their missiles will inevitably be affected.
In view of the strategic position of GPS, China and Russia have invested heavily in the research and development of independent satellite navigation systems Beidou and GLONASS, so that the two countries can effectively resist GPS signal interference or supply interruption from the United States when necessary, and ensure the normal operation of their missile systems.
At the beginning of reform and opening up, China's national strength was limited, and the aerospace industry was still in its infancy, making it difficult to obtain sufficient resources to support large-scale aerospace projects.
In the early 90s of the 20th century, China signed a cooperation agreement with the European Union on the joint research and development of the Galileo satellite navigation system, and provided research and development funds.
Soon the EU suddenly reneged on its promise, excluded our country and refused to return the R&D funds.
After being jointly suppressed by Europe and the United States, China realized the importance of autonomous navigation systems and was determined to tackle key problems on its own.
Later, the Beidou Satellite Navigation Test System project was officially approved, which opened the prelude to the construction of an autonomous navigation system.
A few years later, the first Beidou navigation test satellite was launched. Not long after, a satellite was added to the system, and the Beidou-1 system took shape.
By 2019, there were 39 Beidou satellites operating in orbit, achieving all-weather and global coverage, and the Beidou system was officially completed.
Today, Beidou is widely used in national defense construction, precision agriculture, transportation positioning and other fields, and its export has brought considerable economic benefits, and has become one of the world's four major satellite navigation systems.
Similar to our country, in the late 70s of the last century, Russia launched the GLONASS satellite navigation system program in order to get rid of dependence on the American GPS. However, due to technical and financial constraints, GLONASS's early performance and satellite life were inferior to GPS.
After the collapse of the Soviet Union, Russia continued to promote the construction of the system, and by 1995 it had invested $3 billion in system upgrades, and the performance and coverage of GLONASS had been greatly improved.
Today, Russia's latest GLONASS satellite has a service life of up to 10 years, and the overall level of the system is on par with GPS.
Based on the application of autonomous satellite navigation, China and Russia's missiles are no longer completely dependent on US-made GPS, and even if the US turns off GPS signals, it will be difficult to deal a heavy blow to the national defense strength of the two countries.
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