Modern technology has had an impact on all aspects of people's lives. In the "travel" of food, clothing, housing and transportation, in addition to the various means of transportation that change the way people travel, there is another extremely important invention, the electronic map. In the past, people used traditional paper maps, which not only had a certain degree of difficulty in reading, but also often had the problem of not being updated in time, which easily caused misleading. The electronic map overcomes these shortcomings. It only needs to download a small software on the smart device to get an unobstructed view of the surrounding environment and real-time navigation of the route. This is all the convenience brought by the development of the satellite positioning system.
Now, my country's Beidou satellite navigation system is officially put into use. However, through comparison, it can be found that the world's earliest navigation system GPS only uses 24 satellites, while my country's "Beidou" requires 55 satellites. What is the reason? Come to hear the answers of the experts. Experts have long analyzed the problem of
: Although satellites sail in the boundless space, after all they have to revolve around the earth, so special orbits are needed. If the orbits of the various satellites are not allocated properly, a "traffic accident" is very likely to occur in space, resulting in huge economic losses, and debris will also affect future flying objects.
Therefore, the operation of satellites also pays attention to first-come-first-arrival. The sooner the satellite is launched, the sooner the exclusive orbit can be seized. The United States is the first country to develop satellite positioning. Therefore, the 24 satellites launched for the GPS system can be chosen at will. track.
Since the satellite is orbiting the spherical celestial body of the earth, naturally, the closer to the earth, the shorter the orbit and the more accurate the positioning. The GPS satellites of the United States have chosen orbits relatively close to the earth due to their launch time advantages, so they can achieve precise positioning without too many satellites. China's Beidou satellites were launched late, so they could only choose a longer orbit, so more satellites were needed to assist in positioning.
In fact, although my country has launched a total of 55 Beidou satellites, the basic operation of the Beidou navigation system requires only 35 satellites. Then why does our country launch so many satellites? This is actually for long-term considerations. If satellites need to be updated later, a certain number must be guaranteed to ensure the smooth operation of the system while updating.
The satellites of the United States and China are also quite different in layout. The GPS satellites in the United States use 6 orbits and 4 satellites in each orbit, while the Beidou navigation system uses a three-orbit hybrid layout created by my country, which enhances positioning accuracy while ensuring coverage, so more satellites are needed. Quantity.
In this way, although the Beidou system has nearly twice as many satellites as the GPS system, it is not because the technology is inferior to humans, but through the wisdom of the people of our country, it has found its own satellite navigation system development path, which perfectly solves the problem. The problems caused by the high orbit have also prepared for future development.
Beidou satellite navigation system, as a product of my country's new era technology, is still inferior to the old-brand navigation system GPS in terms of penetration, stability and market share. However, in the near future, the Beidou system will give full play to its advantages and steadily advance to the world's most advanced satellite navigation system.
