The Beidou satellite global positioning system independently developed by my country is becoming more and more perfect. So in the future, who will have the last laugh, China Beidou or the United States GPS?
Speaking of the global satellite positioning system , the first term that comes to many people's minds is GPS. This served all aspects of our lives in the early years, but it may change drastically now and in the future. Speaking of global The satellite positioning system has to mention GNSS, which is the global satellite navigation system. Not every country is qualified to join this system. Currently, the only members of the entire system are the American GPS, Russia's Gionass, Europe's Galileo and China's Beidou.
And these four global satellite positioning systems rely on their excellent strength to take the lead. Among them, the most well-known ones are the American GPS and China's Beidou satellite positioning system. Speaking of GPS, many people are familiar with it, because in the early years, the navigation function of cars and the positioning function of mobile phone maps were all completed with the help of GPS. GPS positioning system In fact, the United States began to develop this technology as early as the 1970s, and it was fully completed in 1994, with a total cost of up to 20 billion US dollars.
With its mature technology, it has performed very well in many fields such as sea, land and air, and GPS was once favored by the majority of surveyors due to its characteristics of all-weather, high precision, automation, and high efficiency. GPS is even more brilliant in the daily lives of ordinary people. The reason why GPS can achieve precise positioning is inseparable from their positioning principle. The distance is calculated by multiplying the time it takes for the ranging code signal sent by the satellite to reach the GPS receiver multiplied by the speed of light, and then using the distance intersection method to find the point in the coordinate system three-dimensional coordinates in . Nowadays, most of the positioning functions in our daily life are still completed through the American GPS positioning system. This is mainly because GPS started earlier and has a more mature positioning system. Secondly, in terms of use, in the early days, in order to promote the GPS system , GPS positioning system is free and open to the public, so there are still so many users.
Among the four major positioning systems in the world, the GPS positioning system is the well-deserved leader, but the Beidou satellite positioning system independently developed by our country also performs well. So what technologies does it have that are not inferior to the GPS positioning system? What is the true strength of the Beidou satellite positioning system?
Beidou Satellite Navigation System is a satellite navigation system independently constructed by China that can operate independently. It can provide high-precision positioning, navigation and timing services to users around the world, and it is all-weather. The construction of the Beidou satellite navigation system started in the 1990s. At that time, in order to build the Beidou-1 system, the country launched the construction of the Beidou-1 system in 1994. Until 2003, our country launched three geostationary satellites. Orbiting satellites laid a solid foundation for the later Beidou satellite navigation system. Then it entered the construction process of the Beidou-2 system. From 2004 to 2012, our country completed a launch network of 14 satellites and completed speed measurement and positioning and related services in the Asia-Pacific region. From 2009 to the end of 2018, it was the construction of my country's Beidou-3 system. During this period, a total of 19 satellites were launched and networked. Since then, it has been announced that the Beidou satellite navigation system has completed the basic system construction.
On the morning of July 31, 2020, the Beidou-3 global satellite navigation system was officially launched. Since then, it has been announced that our country has entered an era of independent navigation systems. Beidou system consists of three parts: space segment, ground segment and user segment. The space segment mainly consists of geostationary orbit satellites, inclined geosynchronous orbit satellites and China Earth orbit satellites, while the ground end mainly includes the main control segment, It consists of a series of operation and management facilities such as monitoring stations. The user segment is composed of a group of products compatible with the Beidou satellite system, including terminal equipment and some application systems and services.
The technical characteristics of the Beidou satellite navigation system are related to its enhancement system. The Beidou foundation enhancement system is an important part of the Beidou satellite. It can improve the accuracy of the positioning system to centimeter level and also improve the stability of system services. and operational continuity. Different from traditional satellite positioning systems, the Beidou satellite positioning system has its own unique advantages, that is, "Beidou" has both positioning and communication functions and does not require the support of other communication systems. That is to say, as long as the device can connect By accessing the Beidou satellite database, positioning can be achieved, but the positioning software on our mobile phones often needs to be connected to the network to work.
The Beidou satellite system has a very large coverage and has no communication blind spots. The Beidou satellite positioning system can not only cover China, but can also be used around the world. The "Beidou" enhancement system can also be used to enrich other applications. Finally, Beidou satellite is a technology independently developed by my country, so it is relatively safe, reliable, stable and suitable for key departments.
GPS has already met our daily needs, so why do we still have to work hard to develop our own positioning system? Who can become the leader in global positioning system in the future?
The first and most important point is to consider national security. This was shown as early as 1991 in the Gulf War by the United States against Iraq . According to previous battles, if you want to destroy a stronghold in Iraq, generally All require a round of intensive bombing, but with the support of the GPS positioning system and the ground imaging system, the US military achieved precise strikes with only two missiles . This also shocked countries around the world at that time, and they began to develop corresponding positioning technologies. Now GPS belongs to the U.S. Air Force, and all refined combat units of the U.S. military are equipped with accurate satellite positioning systems. In modern warfare, once precise positioning is lost, it will be difficult to win the war. Therefore, for the sake of national security, a set of its own Beidou satellite positioning system came into being.
Speaking of future development, the Beidou satellite positioning system is still in its infancy. The large maintenance costs in the later period and the early development costs make the civilian Beidou satellite system need to be paid. But in the commercial field, Beidou has been widely used. In addition, more than 100 countries around the world have signed relevant agreements with us to use the Beidou positioning system. In other words, most countries around the world still prefer our country's Beidou system. Although GPS is still unique in the civilian field, I believe that in the near future, with the continuous development of my country's Beidou satellite positioning technology, we will be able to surpass GPS in both commercial and civilian fields.
