Universe dominance

Here at the Fuyun Group Space Center in Longling Town, Li Fu, dressed in a white coat, is leading people to discuss the company's future space development plan.

"Now that we have our own aerospace plane, there will be no problems traveling to and from space in the future. However, we are now restricted in many aspects. The navigation and positioning system we use is the country's Beidou. What we want in space If you want to stay, you can only choose to dock at the Tiangong Space Station.”

"So I think the next step, the core of our work should be to establish our own navigation and positioning system and build our own space station. In this way, we will have our own foothold in space in the future, and the further plan is to set up on the moon. While building our own space station and permanent lunar base, mining resources, and more.”

Li Fu sent his next plan to everyone present through his virtual machine. The more the company developed, the more Li Fu felt that his hands were tied and it was difficult to carry out his plans.

Not to mention anything else, every time an aerospace plane goes to and from space, you have to apply in advance. Maybe now because the policy allows it, the application is easily passed. If the policy changes in the future, in one sentence, Fuyun Group will It's hard to keep going.

In the future, if the company develops further and the scientific experiments that need to be carried out become more influential, it will be subject to more restrictions, which makes Li Fu feel very helpless.

"Perhaps I should learn from His Majesty, the founding emperor of the Han Dynasty's technological empire."

Such an idea flashed through his mind, but soon Li Fu didn't think much about it and continued to discuss future space development plans with his men.

"Brother Fu, we should also build space factories, space energy bases and develop space agriculture in space."

Yu Liang also looked very excited at this time, grinning widely.

"Don't worry too much. Our next step is to develop our own global positioning satellite system first, and then build ourselves a space station first."

"The Global Positioning Satellite System is not difficult. We only need to build the satellites and launch them all into space at once using an aerospace aircraft. As for the space station technology, it is not difficult, but I don't know if the country will do it. We will allow private companies to have their own space stations.”

"You shouldn't have to worry about this in space, right?"

"Having said that, it's better to apply with the country."

Everyone was discussing one by one, and the core of it was that many things in space were not applied to the country. After all, according to consistent principles, this space belongs to all mankind and does not belong to any one country. But everyone He is from China, so it seems unreasonable not to apply to the higher authorities.

…

At the Longling Town Space Center, the huge aerospace plane "Hercules 1" rushed into the sky in an instant with bursts of roaring sounds, like an arrow leaving the string, and arrived in space a few minutes later.

Its huge belly contains 36 satellites manufactured by Fuyun Group. These 36 satellites are used by Li Fu to establish his own global positioning and navigation system.

Generally speaking, the ground needs to be accurately positioned through satellites in space. Generally, at least 3 satellites are needed. However, when performing pseudorange single-point positioning (absolute positioning), since the pseudorange measurement observations of each satellite include the error of the receiver clock error, the distance measurement observations are very inaccurate, and the receiver clock error needs to be As an unknown number is added to the calculation of pseudorange single-point positioning, plus three unknowns of coordinates, at least 4 pseudorange observations are required, that is, at least 4 positioning satellites need to be observed simultaneously to achieve accurate and real-time positioning.

To cover the entire globe, the number of satellites required is at least 24. This number can ensure that at least 4 satellites can be seen from every place in the world at any time. The four variables of three-dimensional space coordinates and time can be solved through four equations. These 24 satellites are distributed in 6 orbital planes, with 4 satellites in each orbital plane. The receivers of the positioning system adopt passive positioning methods (that is, the receiver does not need to send signals).

Uncle Sam's Global Positioning System (GPS system) and Polar Bear's GLONASS system both use 24 satellites for global positioning, but China's Beidou navigation system has 35 satellites. The difference is that their respective satellites are in space. caused by the difference in height.

Uncle Sam and Polar Bear developed early, so the good positions were occupied by them. They can achieve global positioning and navigation using only 24 satellites. China developed later and did not have any good positions, so it required 35 satellites.

Now that Fuyun Group wants to build its own global positioning and navigation system, the location is even worse. So after careful research and planning, the Fuyun Group Research Institute has manufactured 36 satellites to build its own global positioning system. Navigation System.

As soon as the aerospace plane soared into the sky, it entered space in just a few minutes and began to orbit the earth, adjusting its altitude and orbit in preparation for launching satellites.

The traditional method of launching satellites is to use a launch vehicle to send the satellite launcher into a predetermined orbit and then launch it out. In this way, satellite launches are generally subject to great restrictions.

On the one hand, the carrying capacity of the launch vehicle is limited and it is impossible to launch a spacecraft of too large a mass. Moreover, a Mars can often only launch one satellite. There are many cases of multiple satellites with one rocket, but the mass of the satellites among these multiple satellites They are all very small, some only weigh a few kilograms, and have no significant effect in space.

On the other hand, because the fuel of the launch vehicle is limited, when launching a satellite, it is necessary to put the satellite into the predetermined orbit as soon as possible. Otherwise, if there is a deviation, it will be difficult to adjust, which means that the launch s failure.

Therefore, although the global positioning and navigation system only requires 20-30 satellites to be implemented, there are only Uncle Sam's GPS, Polar Bear's GLONASS, China's Beidou navigation system, and Europe's Galileo navigation system in the world. In addition, No other country has its own GPS navigation system.

One of the most important reasons is that positioning and navigation satellites are large in mass and difficult to put into orbit, and ordinary countries simply do not have the strength to complete them.

China also quickly established the Beidou navigation system after the emergence of the aerospace plane, because it is very simple to use the aerospace plane to launch satellites.

The aerospace plane has a very powerful carrying capacity, which is measured in tons. Dozens of satellites can be easily transported to the sky together. The most important thing is that the aerospace plane can also easily adjust its altitude and orbit. , sending satellites into the predetermined orbit one by one.

"Didi, the orbital altitude is 23,000 kilometers, starting to release the first satellite."

Luo Xiaoyao received the order and gently pressed a button.

Behind the belly of the huge space plane, a huge satellite with a mass of more than 2,000 kilograms was slowly pushed out by the booster. Once it entered space, the solar panels it carried quickly unfolded slowly, like A pair of wings generally begins to fly around the earth.

At the Longling Town Space Center on the ground, Li Fu and others seemed a little nervous at this time. The technical content of satellites is not too high. Uncle Sam's high school students have even made satellites and launched them into space. Fu Yun With so many scientists in the group, it is naturally not difficult to build satellites.

"Didi, the first satellite was successfully launched and entered the predetermined orbit. It is expected to pass over China in 2 minutes."

"Didi, the satellite signal is received and the signal communication is normal."

Two minutes later, the satellite passed by China. The space center successfully received the satellite's signal. The satellite could work normally and the launch was successful.

"Haha, although this is the first time to build a satellite, we are not very technical in terms of technology, but we have an aerospace plane, so it doesn't matter if we can make the satellite bigger."

Li Fu laughed happily at this time. Because it was his first time to make a satellite and he had no experience, the satellite was very bulky. If there was no aerospace plane and a launch vehicle to launch it, it would really have to be used by aerospace scientists. Scold him to death.

Because the satellite has a greater mass and volume, it means that the requirements for the launch vehicle are higher, the cost of launch is greater, and the possibility of failure is higher. However, Fuyun Group has an aerospace plane with a mass and volume It is no longer the main factor to consider. If technology is not good enough, we can make up for it in other aspects. It doesn't matter if the satellite is larger.

"Start adjusting the orbit and altitude in preparation for launching the second satellite."

The aerospace plane continuously adjusts and pushes satellites in space, sending satellites one by one into predetermined orbits and altitudes. As more and more satellites are in space, soon, the space center will begin to be able to Carry out precise positioning.

"There are 4 satellites in space. Starting from the calculation, the location of the space center is 115°40' east longitude and 26°20' north latitude."

"Boss, the positioning accuracy of our own Clairvoyance navigation system is no worse than that of the Beidou navigation system."

Chen Bin looked at the data positioned by the navigation system and said excitedly to Li Fu.

"Well, it's not bad. How about taking a look at the pictures captured by the high-definition camera on the satellite?"

Li Fu nodded with satisfaction. At this time, on the huge display in the center, a map of the earth was being continuously improved. This map was made from information collected by his company's clairvoyance navigation system.

The Clairvoyance navigation satellite is not only used for navigation, because it is large enough, it also carries an ultra-high-definition camera.

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