Chapter 1102

Although there are a lot of places that can be used in the orbit above the earth, this is also relative. If you launch some separate satellites into orbit, of course, it is not a big problem, but if you launch a high-density networking satellite like the space exploration company's "star chain project", it will be troublesome.

This kind of networking satellites have certain requirements for the distance between satellites and the regional division of satellites. It does not mean that the satellite will be completely launched into orbit, so the orbit resources of these satellites are a kind of more important resources.

Then there is the problem. For example, the space exploration company's "star chain project" and other networking satellite launch plans, they have so many satellites to launch. This time must be very long, and it is impossible to launch tens of thousands of satellites in a very short time.

If their company occupied these orbits ahead of time, it is obvious that this is the most desperate thing. Without these orbits, their subsequent launch plans will have to be substantially adjusted or even suspended. This kind of loss is more than the tens of billions of dollars of space waste disposal business lost by their company!

We should know that in addition to the well-known communication network construction projects such as the space exploration company's "star chain project", there are several similar satellite launch plans for communication networks in Europe and the United States. Each of these plans involves a capital amount of 10 billion US dollars.

If these related plans are interrupted by the infinite gravitation group, the loss will be more than money!

"Boss, you really can do this! Moreover, our laboratory can still do better. With our current communication satellite technology level, it is obvious that we do not need to launch so many communication satellites to form a global high-speed communication network like the "star chain project" of space exploration company.

I have a simple calculation. Even if we only launch 10000 of our communication satellites, the high-speed communication network formed by our company is much better than theirs. Whether it is signal strength, data transmission speed or other indicators, it can surpass them a lot.

In any case, according to the boss's idea, we don't need to launch tens of thousands of satellites. As long as our satellite orbit is in the center of the orbital node they need, they can only make a substantial adjustment if they want to network.

Because our company's communication satellite does not occupy only one key node, but tens of thousands of such nodes. They can't do anything to bypass our interference.

If you want to strike better, boss, we can even add some jamming bands to the design of our communication satellites, which is very simple for us.

In this way, even if they want to deploy satellites near our satellite orbit, our satellite signals will seriously interfere with their satellite communication signals.

Anyway, when it comes to a big deal, we will say that our company's design has been neglected. However, at that time, tens of thousands of satellites were floating in the sky. Who can force us to scrap these satellites? " After flattering his boss, Chen began to put forward his own optimization suggestions.

He said this, of course, from his confidence in the technology of the laboratory he managed, as well as his accurate judgment of the situation.

Despite the fact that there are no 10000 satellites in working state in the whole earth orbit, it seems that there are very few satellites in such a wide space. However, the orbital resources that can be used are really limited. To explain this problem, it is necessary to explain how the satellite orbits are distributed.

Because of the existence of Van Allen radiation belt, the distribution of satellite orbit can only be divided according to the distribution area of these radiation bands.

The so-called Van Allen radiation belt refers to the captured radiation area around the earth. This area is composed of high-energy electrons and protons in the solar wind captured by the earth's magnetic field. They are divided into three layers. Each layer has a permanent band structure, and the vacuum zone is between layers.

The first layer ranges from 1500 to 8000 km, the second layer ranges from 15000 to 25000 km, and the third layer is still under study.

These radiation areas will cause great damage to the electronic equipment of the satellite, and the protection is difficult, so the satellite needs to avoid these radiation bands.

Satellite orbits are divided into low orbit, medium orbit and high orbit satellites according to the first and second radiation bands. Of course, there is also a long elliptical orbit (special orbit): it is mainly used to cover the north and south poles, and the perigee is about 500 km high and the apogee is about 40000 km high.

Due to the existence of Van Allen radiation belt, the orbit height and the need to reserve a certain distance to prevent frequency interference, the total number of satellite orbit resources is limited.

And frequency interference is also a problem that must be paid attention to. Take the geostationary orbit as an example, the whole earth has such an orbit, and everyone wants it.

Generally speaking, the longitude between two medium capacity satellites is no less than 2 degrees. If one satellite is placed at 2 degrees, only 180 satellites can be put in a 360 degree circle, and the resources are quite limited.Of course, there are more than 180 orbits in this orbit. The infinite gravity group is going to build two large space ports here in the future. Just think how crowded it is!

Therefore, in order to solve this problem, we need to use certain technical means. Now we mainly use two kinds of technical means.

One is orbit co location technology, that is to place two or more satellites in the same orbit position. However, this technology needs to realize the precise control of orbit by ground measurement and control, and break through a series of key technologies such as orbit position optimization, position protection strategy optimization and precise orbit measurement. At present, only a few countries in the world, such as the United States, Huaxia and baga countries, can master the technology.

The other is to let two satellites with relatively close spacing use different frequency bands of communication frequency, so as to improve the utilization rate of orbit. Here is what the ITU radio rules need to do. Coordinating the frequency without interference is the meaning of its existence, and the frequency is not what you want to use.

This is where Chen wants to move his hands and feet. For satellites in non geostationary orbit, we should also pay attention to avoid frequency interference between the two satellites.

If we really follow Chen Shuming's suggestion, the satellites they launched can not only occupy the key orbital nodes, but also the signal interference frequency on the satellites can make those satellites that want to be close to this orbital position can not get close to it, which is even better than Lei Tiantang thought!

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