Farewell to GPS Becoming the Beidou era
2018-04-13 06:58 Source: OFweek Internet of Things
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Introduction: I still remember when I was a kid, I was always lethargic when I was out in the car. At this time, adults often told them to be sober. Otherwise, they would have to make jokes afterwards if they didn't know where to go. Now that we have grown up, but the road is still unfamiliar, but it does not matter because we already have satellite navigation.
I still remember that when I was a kid, I was always lethargic when I was out in the car. At this time, adults often told them to be sober, or else they would have to make jokes about how to get away. Now that we have grown up, but the road is still unfamiliar, but it does not matter because we already have satellite navigation.
Today's satellite positioning system has gone deep into all aspects of our lives, from car navigation to mobile phone APP positioning path finding, our life is also more convenient because of it. At least in most cases, you won't get lost even if you live alone.
Currently, the most mature satellite navigation system on the market is GPS, which is called the Global Positioning System. A project initiated by the U.S. military in 1958 began to be used in 1964. After more than 20 years of research and experiments, it cost US$30 billion. By 1994, 24 GPS satellites with global coverage of 98% had been deployed. .
Due to the advantages of the name, as well as high accuracy and accuracy, GPS has entered the Chinese market at the end of the 20th century. Today, most of our smart phones and car navigation systems use GPS systems. It seems that this kind of global satellite navigation system has made us accustomed to it, but the market will not always remain the same.
Why launch an autonomous navigation system?
Now the country is making great efforts to promote its own BeiDou navigation system, and also hopes that all consumers can use their own satellites to navigate. There may be many people who have questions about why GPS is so easy to use and why we must promote our own satellite positioning system.
For example, it can be understood that when the GPS was first introduced, because of its better positioning accuracy than expected, the US government implemented SA policy in 1991 to reduce the positioning accuracy of civil GPS due to its own safety considerations. About 100 meters. In 2000, the SA policy was cancelled and the accuracy of civilian positioning was restored to 10 meters.
From the above example, it can be seen that GPS is still in the hands of the U.S. government. It is not only the presence or absence of signals, but even the positioning accuracy can be controlled. In this case, if they do not provide support for positioning satellites, they only operate between the fingertips. However, for us, it will cause great disaster.
Therefore, only by mastering its own satellite navigation system will it be possible to get rid of dependence on others and truly be independent in satellite positioning and navigation. The Beidou satellite navigation system was born with this mission.