Blooming America

"At 10:58 this morning, the first maritime satellite of the United Nations Maritime Organization successfully launched the s8 maritime satellite. It is an important part of the United Nations application in maritime rescue operations. Maritime satellites can help maritime telephone communications. This maritime rescue operation The guarantee provided by the development... It is reported that the United Nations will launch three maritime satellites. These three satellites will operate in geosynchronous orbits, and their scope of work will include the whole world..."

On January 10, 972, at 12 o'clock noon, the Angel Wen channel began to report on the news of the UN maritime satellite this morning.

However, for ordinary people, it seems that it is difficult for them to be interested in this kind of smell, and they probably have not discovered the influence that this smell may have on them at this time.

For ordinary people, what they are paying attention to now is actually the two heavyweight news of the Eden Project a few days ago and the Babel project earlier.

As for what kind of maritime satellite, it is not very important to them.

But this news is quite eye-catching in the business world

Because just two days ago, Motorola also announced their plan, and their Iridium plan has already begun.

Although the positioning of the two is different, many people have seen the atmosphere of the two competing on the satellite phone at this time.

They obviously have misunderstood the fact that Catherine never considered Motorola's affairs. As for the Iridium project, Catherine did not care about it. Since the end of last year, the 100 million funds that she invested in the Iridium project have changed from When the stock market is gradually being pulled out, Catherine is now ignoring this plan.

But Catherine’s thoughts were not spoken out, and such thoughts could not be passed on to others.

The Iridium satellite program looks very good and powerful, but the number of satellites they use is too much, so maintenance is very difficult. From another perspective, if they can’t compare the telephone cost with the signal strength of the Iridium satellite program If you upgrade, then in the end it will only fall to the same fate as in history.

For Catherine, in this plan, the biggest variable now is that

Because people in history did not participate in this plan at all, they expressed their disdain for the Iridium Project, because this plan is really too flawed.

If the other party reacted at this time and then adjusted the strategy in time, then Catherine might steal the chicken and lose the rice.

Although the problem itself is a major flaw, the Iridium plan itself can still avoid losses. Otherwise, when Motorola sold Iridium, why did the company that took over make more than 20 million US dollars in profit? ?

The current positioning of the Iridium project is similar to that in history. This is why Catherine is very relaxed about the Iridium project, but the problem is with Motorola’s allies...

...

The satellite launch of the United Nations has caused quite a stir in the international arena.

——All this is due to a UN resolution: such a resolution on humanitarian and space safety regulations

This United Nations resolution, which does not exist in history, is a product of the Cold War

This convention preliminarily stipulates the importance and restriction of geostationary satellite orbits

Geosynchronous orbit, also known as 24-hour orbit, the orbit period of the satellite is equal to the rotation period of the earth in inertial space, which is 23 hours, 56 minutes and 4 seconds, and the direction is also consistent with it. The satellites have the same trajectory of the sub-satellite points at the same time every day When the orbit coincides with the equatorial plane, it is called a geostationary orbit, that is, the position of the satellite and the ground remains relatively unchanged

A geosynchronous orbit is a circular geosynchronous orbit with a zero inclination angle. It is called a geostationary orbit because a satellite operating in such an orbit will always be located above the equator, relative to the ground height of the orbiting satellite that is stationary on the surface of the earth. It has a wide coverage area of ​​about 36,000 kilometers. Using three such satellites evenly distributed on the equator of the earth can achieve global communications except for a small part of the north and south poles. Now these three maritime satellites of Catherine are because of this. Principle of

According to the resolution, the synchronous orbit is an orbit that is very important to the earth, and products similar to communication satellites are not allowed to be launched on this orbit, because this is a "community of human interests". At the same time, the United Nations is temporarily in synchronous orbit. The number of satellites has been preliminarily divided, and now it is stipulated that the first 60 satellites, except for the 10 reserved by the United Nations itself, the remaining 50 satellites will be divided and formulated by the two camps of the Soviet Union and the United States, but at this time, Both sides want to get one more position for themselves, so they are still arguing

Geosynchronous orbiting satellites are also called geostationary satellites. The radio waves radiated by the antennas on this satellite are basically stable over the coverage area of ​​the earth. In this coverage area, any earth station can achieve 24-hour uninterrupted communication. Therefore, Geostationary orbiting satellites are mainly used for land-based fixed communications, such as telephone communications, television program rebroadcasting, etc., but are also used for maritime mobile communications. However, they do not have as many base stations as land-based cellular mobile communications. Only a satellite is a satellite. Large base stations and mobile service switching centers are still located on the shore, and the communication between marine mobile terminals, that is, between ships, can only be realized after two satellite hops.

For example, if ship A needs to communicate with ship B, then ship A sends the signal to the satellite, hops through the satellite to the mobile service switching center on the shore station, and then the shore station sends the signal to the satellite, and then through the satellite one. Jump to the second ship

This is the principle of Catherine’s maritime satellite

In theory, the number of satellites that can be accommodated in a geosynchronous orbit is quite huge, but due to technology and some unavoidable factors, satellites cannot be absolutely stationary relative to the earth, and they must deviate from the geosynchronous orbit, in order to prevent satellites from being congested. Accidents—specifically, they may be collisions, because they are not absolutely stationary, and in some cases may seriously deviate from the original track—so their actual number will be greatly reduced

The United States used this reason to raise this resolution

They had expected that the Soviet Union would reject this proposal, and they were even prepared to fight the opponent for a long time.

But who knew that Andropov hit the snake on the pole and bit this decision all at once.

This is something that the United States did not expect

After experiencing the success of the moon landing, the Soviet Union has already landed on the moon three times so far. At this time, their self-confidence is overflowing. In this regard, they are no longer afraid of the United States

The Americans did not expect such a thing to happen, so in the end, the two sides were already entangled in the interest of the number of satellites.

In other countries, at this time, most of them are playing soy sauce and watching the excitement. Although countries such as Britain and France are also fighting for reasons, many countries are leisurely watching the world at this time. The two giants are chattering there. Argument

The reason for this situation is also very simple-it is too difficult to launch a synchronous orbit. It is so difficult that except for the Soviet Union and the United States, basically no country can launch a satellite in a synchronous orbit. They want to launch themselves. In the case of satellites, we can only rely on the relationship between the United States and the Soviet Union, but some people have calculated that the cost of this launch is too huge, and the harm is greater than the benefit, and they can’t afford it.

Because of the limitation of the rocket carrying capacity and the launch site is generally not on the equator, most of the launch vehicle cannot send the satellite directly to the synchronous orbit. It must be divided into three stages to get into orbit. The first step is that the launch vehicle sends the satellite to the orbit. To the mooring orbit 200,300 kilometers above the ground; the second step is to add the satellite to the point where the transfer orbit is tangent to the synchronous orbit, that is, the apogee of the transfer orbit; the third step is to ignite the engine at the apogee, Make the satellite enter the geosynchronous orbit, and use the small engine on the satellite to adjust the satellite's attitude, so that the satellite is completely in the synchronous orbit

If a country’s satellite launch site is built on the earth’s equator, it seems that the launch of such a satellite is much simpler?

Launching from west to east on the equator, reaching the required orbital height, and fixing the point at an appropriate location, the problem is solved. Unfortunately, everyone knows what the situation is like in the countries near the equator...

Uncle Hei might be willing to let these people build a launch site in their own country, but other countries will obviously not agree...

Although the strategy of the first batch of 60 satellites is a bit ridiculous, both the United States and the Soviet Union are maintaining this strategy with a malicious mentality at this time.

The United States wants to fight for its best interests and exclude other countries, while the Soviet Union at this time wants to negotiate this resolution.

Speaking of it, there is a country-China who originally wanted to veto this agreement.

If both the United States and the Soviet Union want space at this time, then speaking of it, it will not pose the greatest threat to them, but it is not good for China, which is unable to launch geostationary satellites. news

China~www.wuxiaspot.com~, which has also become one of the big gangsters, is going to wave its veto power to veto this plan in full.

At this time, the United States and the Soviet Union visited China in turn, and they promised to leave enough satellite positions for China, and then the problem was resolved.

Although the specific arrangements have not yet appeared at this time, there is basically a consensus

The five gangsters... each of the five permanent members will be able to launch 6 geostationary orbit satellites, while the remaining 20 satellites will be coordinated and distributed by other countries

Although a little ridiculous, the hooligans still maintain this ridiculous plan for their own benefit.

And when the opinions were almost unanimous, the UN’s own satellite had already been launched into space...

...

2nd today~

There are also three, turning grief and anger into strength, codewords and codewords...to be continued. If you like this work, you are welcome to vote for recommendation and monthly tickets. Your support is my greatest motivation.