Remote sensing satellites are artificial satellites used as remote sensing platforms in outer space. Remote sensing technology that uses satellites as platforms is called satellite remote sensing. Typically, remote sensing satellites can operate in orbit for several years. Satellite orbits can be determined as needed.

A remote sensing satellite can cover the entire earth or any designated area within a specified period of time, and when it is orbiting along a geosynchronous orbit, it can continuously remotely sense a designated area on the earth's surface. All remote sensing satellites need to have remote sensing satellite ground stations, and the satellite data obtained from the remote sensing market platform can monitor agriculture, forestry, ocean, land, environmental protection, meteorology, etc., and there are three types of remote sensing satellites: meteorological satellites, land satellites and marine satellites.

Civil remote sensing satellites have a very useful effect on the socio-economic development of countries. Therefore, the development of remote sensing satellites should be linked with the national economic development strategy, and only in this way can the effectiveness of remote sensing satellites be brought into full play and at the same time, good conditions can be created for the survival and development of remote sensing satellites themselves. India, Canada, and other countries do not have a very good foundation in space technology and started relatively late, but they have seized remote sensing satellites that are closely related to their national economy and concentrated their limited funds on key projects, so that their satellite systems can effectively serve their economic and scientific research activities, and thus have achieved very good results. Remote sensing satellites were launched more than 30 years ago, but it is mainly in the past 10 years that satellite remote sensing technology has been popularized and applied and benefits have been obtained. This is due to the development of electronic information technology represented by computers, which has created conditions for the application of remote sensing data. Although remote sensing satellites are produced in space technology, their properties are closer to information technology, which complete the acquisition, dissemination, processing and application of information. Therefore, the development of remote sensing satellites should be linked with the development of the information industry, and remote sensing satellites should be more widely used with the help of advanced technological means.

While some space powers are able to provide a variety of remote sensing data sources in the remote sensing market, many countries are still actively developing their own remote sensing satellite systems for a variety of reasons. For example, it is difficult for foreign data to meet the specific requirements of users, especially the real-time and continuity are often not guaranteed, and the price is expensive and unaffordable, and it is also restricted by other aspects such as national relations. Developing your own system gives you the initiative and flexibility.

Small remote sensing satellites have become an important development trend, and many small and medium-sized countries and developing countries have started with small satellites to promote the development of their own remote sensing satellites and their applications. Small satellites are not only low cost, short development cycle, but also have great flexibility, can develop special systems according to demand, and can also form constellations to meet different observation requirements, which represents a new, popular technology development model, with great potential comprehensive large-scale earth observation platform reflects the characteristics of large-scale comprehensive use of remote sensing data, the earth as a whole to study its environment and climate, the need for a global, systematic, The classification boundary of satellite applications is not obvious for continuous and comprehensive observation data, and the role of comprehensive large-scale observation systems is becoming more and more prominent.

The satellite hovering over the military base in Sichuan Province can trigger a signal alarm, and it must be a remote sensing satellite combining an imaging spectrometer and synthetic aperture radar. The imaging spectrometer can obtain fine spectral information from dozens or even hundreds of spectral bands, and can be combined with the spectral database of the laboratory to directly analyze the properties and structures of geology, plants, and water. Synthetic aperture radar can penetrate clouds and fog, and even part of vegetation and soil, all-weather and all-weather observation, and can improve the ability to identify targets through multi-frequency, multi-polarization, multi-incidence angle and other means, the application and combination of the two remote sensors - that is not only the detection of the ground, but also the detection of the state deep into the surface of the interior.

This place was kept secret in the past, but today the multinational force came here to cross, and for the first time to explore that world, someone used satellites to scan the structure of the underground military base, what is this for?

Li Huan was ordered to take everyone through that space passage today, because to be honest, so far, although after Li Huan came back, other scientists have passed through that space passage and entered that world, but in a dangerous situation, only Li Huan can lead everyone. So his task today is to be the best, the tour guide said that the tour guide may be a little funny, but in fact he is a tour guide. Therefore, Li Huan stood in the center of all the teams, waiting for everyone to complete the team, and then took everyone into the underground military base in Sichuan Province.

Because considering that there are still a lot of military secrets that cannot be leaked in the multinational force's entry into the underground military base in Sichuan Province, it is said that the underground military base in Sichuan Province is closing important passages, but only keeping a major road in the middle. Li Huan also received an order to wait for all the forks to be closed, leaving only the middle road, and wait until all the monitoring equipment and automatic weapons on that road start to operate, before taking everyone into the underground military base, before Li Huan simply told everyone about the precautions of that world.

When Li Huan got that all the monitoring equipment and automatic weapons on the avenue had been turned on, and all the records had been closed, he clapped his hands: "Okay, after so long of professional adaptation training, everyone must have thoroughly mastered the method of surviving in that world." I repeat, maybe I don't have a comprehensive understanding of that world, and the training I did with you is only based on my personal understanding, of course, I believe that you are the best of the best, so you should have your own ideas. Then after we go to that world, we can explore freely except for paying attention to the things I said, and we are all the same, so let's enter the only passage to that world......"

Everyone listened to Li Huan and sighed, finally ushered in this moment.

For this moment, I don't know how many people have broken their heads in front, they can't know what will happen next, they have to do any training according to the requirements of the state, they must do it immediately. During the year-long preparation period, in addition to adaptive training, they went through countless demonic training. Now that this moment has finally come, hearing that Li Huan is going to take them into the only passage of that world, everyone can't help but gear up, and check the equipment on their bodies for the last time, confirming that the equipment is correct, you must know that these equipment are their hole cards to save their lives in that world.

"The other one after you pass through this entrance, I want to tell you that after passing through this entrance, you will arrive at a basement, and all kinds of preparations have been made in that basement, so you don't have to worry at all, but if you see people in that world, try to be restrained, don't touch them, don't talk to them, if they ask you anything, then you can answer. The place where you appear is called Flower Language Island, which is about 5 nautical miles from the mainland. In the past, the exit was not here, but I changed the exit, because the first exit I came out of was a place called the Maple Leaf Forest, and that place is the place where people want to die, and now you can enter directly through the entrance I built......"

"In addition, I want to remind you that after arriving at the entrance of that world, we have built a comprehensive base, and in that comprehensive base, you have only reached the earth, you must pay attention to one point, this is equivalent to you going abroad, just saying that we don't have bilateral visas, but when you go to that country, you have to abide by the customs and traditions of that country. I can only tell you that when you go to any strange place, first of all, you must be humble and respectful, of course, it does not mean that people bully you, and you can't fight back, but don't take the initiative to bully others, if you violate any local laws and regulations or customs, I can't protect you. ”

"In addition, I have to emphasize again, the cultivation environment I created for you last time is my own understanding of that world, but I must tell you that that world is much more dangerous than you imagined, maybe you see that its technology is not very developed, but that world doesn't care about technology at all. Again, I want to emphasize that this is especially true when it comes to monsters, whether on land or in the sea. Especially in the ocean, by the way, I didn't add the content of sea combat to you in this adaptation training, because to be honest, I don't know the requirements of the sea area, but if there is a good way to distinguish the level - if you feel out of breath after seeing him, then it's best to run quickly, that is a high-level, even a catastrophe-level demon beast, in front of that kind of demon beast, unless it is a large-scale legion, it will not play any role......"

"Okay, I don't need to be verbose for the rest, I will remind you one last time, you must be careful when entering and exiting the exit, because to put it mildly, that exit is my privately built territory and my private territory, and the entrance you are going to pass through now is also through my entrance. If anyone breaks something or breaks something, then I will definitely seek compensation from your country, oh, yes, yes, my own private territory must be Chinese territory, so until you reach the dark areas of your choice, you better stay honest, otherwise I have ten thousand ways to make you honest. ”

"Okay, I've said everything I need to say, now let's go......" Li Huan looked at the time, the underground passage should have been completely locked, and all the monitoring facilities and automatic weapons should be opened, when all

After the precautions were informed, especially Li Huan told them the ownership of the location of the exit, which was the Huayu Island that he had worked so hard to build, and he was about to enter the entrance with everyone, but he didn't expect the air headset hanging on his ears to ring. Li Huan was stunned for a moment, and after listening carefully for a while, he sneered: "Okay, I just said it, some people don't seem to take my words seriously, I just finished speaking, this time it is a multinational joint operation, a multinational joint operation, I understand your customs and personal habits, as well as the combat habits of the army, but I want to emphasize that when you step on our country's land now, when you step on our country's soil, you should follow our country's laws...... Now you tell me, who is scanning this military base with satellites? We are sharing this entrance with you in the spirit of sharing the common destiny of mankind, and if you want to play like that, then I'm sorry, I privately announce that the entrance is closed. ”

As soon as Li Huan finished speaking, he saw that the faces of several troops in front of him changed drastically.

Their faces can't change the same, because it has happened, they have gone through so much training and endured so much hardship, just for this moment to glorify their ancestors, they can go to another world to expand the territory of their country, and they can go down in history, this is a very glorious thing, but now Li Huan said that the entrance will be closed...... Isn't this a joke for everyone?

"No! Why do you say that it will be closed, we have made so many efforts for this matter, and even contributed so many resources to build a military fortress over there, and now you say that it will be closed, this is absolutely impossible! I want to complain to your superiors, who is your immediate superior, no, I will not complain through your superiors, I want to issue a serious protest to your Ministry of Foreign Affairs through our Ministry of Foreign Affairs, you are a warlord behavior!" Just when everyone looked at each other, Admiral Kelsen stood up, today is the first day to travel from this world to that world, and the generals in charge of this project from all countries are naturally also present, in addition to generals and officials at all levels and important scientists are also present, listening to Li Huan's words like a dictatorship, Admiral Carlson is the first to take over.

"Why am I a warlord?" Li Huan sneered.

"First of all, we human beings have been exploring outer space and other worlds to expand the resources of our human existence, this resolution has long been passed by the United Nations, no matter who explores another world, it needs to be free of charge, and take the initiative to open to everyone. This is a community with a shared future for mankind, this is the history of mankind and the new trend of .asxs., you can't say that you don't want to open it, you don't want to open it, and we have made so many efforts for this matter, and now you say that you don't want to open up, then our efforts are all ruined!" Admiral Kelsen was indignant: "You can't be the master of this matter anymore, call your superiors, and I will ask my country's Ministry of Foreign Affairs to recall your country's Ministry of Foreign Affairs and make this matter clear!" It's not a kid's game, it's not like you can't open it if you don't open it!"

Li Huan sneered: "Then do you complain?"

Admiral Kelsen probably really didn't know that this entrance was really opened by Li Huan alone, in fact, because everyone present didn't know the specific situation, they all thought that it was just Li Huan, the first to go to that world, and this entrance was opened by the Chinese government, that is to say, Li Huan is just a spokesperson. I like to listen to Haier talk like this, I know what he is thinking in his head, there are many people who have this idea of him, and there are more than one and even hundreds of thousands, but now these people who think like this have already regretted it, because Li Huan proved with his strength that he didn't need anyone to help him at all.

It's a pity that people who know about this matter just know, and those who don't know about this thing will never know, they just think that Li Huan is a spokesperson who has been pushed out.

"What do you think you are!?" Admiral Kelsen said angrily, and then looked at Monk Chen, who was also standing on the viewing platform: "General Chen, can I take what he said as your will?" If not, please come out, we all mankind explore another world together for the common well-being of all mankind, not a game played by children, after you explored the entrance to that world, you invited everyone to build a common outpost, our country has done its best, asking people to contribute money, and we have also shared a lot of new technology, and now you have established the outpost world of the world over there, do you want to unload the mill and kill the donkey?"

"Mr. Admiral Kelson, I will answer this question for you. Monk Chen didn't understand English and listened with a confused face, and Han Jianguo took over the conversation: "No one said that they would unload the mill and kill the donkey, and we would not do such a thing. And you are a bit biased in saying this, why did Li Huan say that he would close the entrance today, he is not a neurotic, if he is a neurotic, it is impossible to lead you to adaptive training and create a training ground for you. He did this because he felt that he himself was being spied on, and if you are the country that talks about human rights the most, who can endure this kind of conversation for no reason? If you find that someone is talking to you for no reason, should you fight back?"

……

"What do you mean by that?" At this point, although Admiral Kelsen was still angry, his eyes were already a little wandering: "What is his privacy being spied on, his privacy being spied on, what does it matter to us?" We are gathered here today to explore that world, in order to explore that world, we have paid a lot of manpower and material resources, our video has undergone arduous devil training, and has also passed his so-called adaptive training, and now he is about to close the door with a word, who can stand it?"

Yes, what they said was not so serious, but it made sense, although everyone felt that if there was something to be done here, then the hat would definitely be put on Citigroup's head, because it was their norm. But what the general of Citigroup said is also very reasonable, this matter is no longer an internal matter of China, but belongs to the well-being of all mankind, how to say it, we have been constantly exploring the new living environment of human beings, in the Charter of the United Nations has long been written clearly, the new environment belongs to all mankind, and even when the Mars or the moon was explored, there was such a rule, no one may take the things that belong to outer space as their own, if you want to talk about outer space, then this other world discovered this time must belong to outer space, so it belongs to all mankind。

But Li Huan is now turning everyone away with a word, he can't open it if he can't open it, so what is the use of everyone who has worked so hard and struggled, and even invested and contributed science and technology to build that front-line fortress? Therefore, although the words of the general of Citigroup are not so popular, and everyone is highly suspicious that they have made up their own fault, there is no problem with what he said, if one person can easily close the door and not allow everyone to enter, then is the United Nations regulations still useful?

At present, the world pattern is originally decided by a few superpowers, and small countries have no right to speak, only waiting for the big countries to arrange, but small countries are also thinking of ways to turn over. But it is unlikely on the current earth, because there are so many resources, and they have been proven, and they have been thrown a few streets in terms of technology, and it is impossible to catch up if you want to catch up so far. The only chance to catch up is to explore another world, where there may be new discoveries or new adventures, or not necessarily.

Li Huan's words just now pierced everyone's already not so strong self-esteem, of course, there is no honesty between countries, integrity is only between individuals, when national interests are damaged, integrity is nothing at all, in the end, integrity will be solved by war, and the winner of the war can decide everything.

So when they thought of this, although everyone thought that it might be a ghost of the Chinese enterprise, Citigroup's bottom-finding satellite is the most advanced, and only they and several permanent members have the ability to detect the structure of this underground military base, but considering that Li Huan closed the door with a word, everyone was not allowed to enter. And the Chinese side has not expressed its attitude towards this matter, but seems to be resigned to it - to sum up, although other countries can probably guess what is going on, but they did not stand up for the Chinese side this time, because they themselves are afraid of being shut out, and once they are locked out, they will forever lose the opportunity to explore that world, and if they lose the opportunity to explore that world, they will never catch up with the great powers.

Under this guiding ideology, everyone has closed their mouths, ready to watch the game between the two countries, anyway, there is no need to take sides so far, even Pakistan, which is the most ironclad with China, has chosen to wait and see what happens at this time, how to say it...... The exploration of a new world, in the face of a new opportunity for rise, no country will give up.

And Citigroup's General Kelsen seems to have guessed this situation, so he boldly stood up and condemned it.

"It's useless for you to say this, it has nothing to do with Old Man Chen, I will make it clear to you again, no matter where you heard about it, what is the passage of this gate

How did you open it, now I'll tell you clearly again. This door was opened by me, it was the way I found to that world, and the scientists and soldiers of our country were also sent by me, and they also entered through this gate...... Let me tell you simply, if I am unhappy, this door will be closed in an instant, and no one will think about going through it at that time, do I make it clear? So you don't have to pester Old Man Chen to say, you can tell me directly if you have any problems. Seeing that Admiral Kelsen was still entangled, Li Huan simply took over the topic: "It's useless for you to complain to them about this matter, they basically can't control me, because although I say that I have a military rank, I am not affiliated with the army." If you have anything, just tell me okay, I'll continue. ”

"That's right, this matter was facilitated and discovered by Li Huan single-handedly, if you have anything, just ask him to do it, we really can't control him in this regard. Han Jianguo saw Li Huan come out to answer the call, and simply closed the upper dialogue channel.

"It's all fart, since you invite everyone to explore this passage, why don't you share the way to open the passage?" Admiral Kelsen suddenly said in surprise, he looked at the crowd and said: "Do you really believe that with a special ability, you can open a passage to another world? I believe everyone has done this kind of scientific research, do you know how much energy is needed to open a passage to that world?" We've done research on this, and if you want to open a spatial channel, it needs enough energy to light up the high-voltage power of the whole of North America in about a second. Even if they can get so much energy and produce such a high amount of energy in an instant, you think about it, what materials can withstand the output of this energy at present? Even if we have only found a few suitable superconducting materials at present, and they are still in the experimental stage, do you say that a person with special abilities can accept the electricity that instantly lights up the whole of North America? Then that person is definitely not a human, it is probably a god. ”

As soon as Admiral Kelsen said this, several generals really began to talk to each other.

In fact, not only Admiral Kelsen did not believe in the fact that you had single-handedly opened the door to other worlds, but neither did the other generals and all the scientists. Li Huan can close this door and open this door by himself - this is impossible, don't think that other countries have not made this kind of attempt - for example, Citigroup has actually been trying this for a long time, and in terms of traditional science, it has already pulled everyone a lot, dozens of streets away.

The most famous space exploration experiment that has been leaked is probably the famous Philadelphia experiment, that is, the matter teleportation experiment, in short, the experiment of opening a wormhole to another coordinate.

The Philadelphia experiment is a long-standing rumor that the Citigroup Navy conducted a secret experiment at a shipyard in Philadelphia, Pennsylvania, on October 28, 1943, to make a frigate destroyer, the USS Eldridge DE-173, invisible to observers.

The Philadelphia Experiment is also known as Project Philadelphia, also known as Project Rainbow. All crew members involved in the project have denied any incidents, with the exception of one eyewitness who claimed to have witnessed the entire experiment. In the absence of any direct evidence and the lack of a rigorous scientific basis for the content of the experiment, the authenticity of the rumors of the Philadelphia experiment has been widely questioned and regarded as a simple urban legend - but in fact, this so-called urban legend is released by the military to attract people's attention. All who should know know that this experiment is real and successful, and that the eye-catching comments are just some gossip from the Citigroup military. This will make the experiment fade out of public view, and those who don't know will guess the authenticity of the experiment, but those who know will always know that the experiment exists.

In October 1943, the Citigroup Navy conducted a secret experiment in Philadelphia with an artificial strong magnetic field, which successfully plunged a destroyer and its crew into another space. Then the entire ship was enveloped in a cloud of green light, and the ship and crew began to disappear from view. By the time the experiment was terminated, the ship had been moved to Norfolk, 479 kilometers away......

Considering the top secrecy of the test, the Citigroup military designated the "Project Rainbow" test object as the destroyer "Eldridge". In June 1943, the "Eldridge" was installed with several tons of electronic experimental equipment. Among them, two large magnetic field generators with a power of 75 kilowatts each were installed in the place of the front turret. The magnetic force they generate is distributed through 4 huge sets of coils mounted on the deck. In addition, there are three radio frequency transmitters (each with 2 megawatts of equal-wave radar), 3,000 6L6 power amplification tubes (field coils used to drive the two magnetogenerators), special synchronization and modulation circuits, and a large number of special electronic equipment. Combined, these devices, properly controlled and adjusted, can bend the light and radio waves around the hull to achieve the effect of invisibility.

At 22 o'clock on July 22, 1943, at the Philadelphia Navy Yard, the power supply to the magnetic generator on board the "Eldridge" was turned on. A strong magnetic field began to form around the hull. A green fog slowly enveloped the Eldridge. The "Eldridge" disappeared from the radar! Just as the officers and men of the Navy who were watching were about to cheer the success of the test, they were dumbfounded by what happened next......

The "Eldridge" itself became almost invisible, and with the naked eye, only the outline of the hull could be faintly seen. Theoretically, warships will only be invisible on radar, and warships themselves will not be "material" invisible. They didn't know what was going to happen next, so they quickly cut off the power to the magnetic generator. When the green fog cleared, the Eldridge returned to radar and people's field of vision. The onlookers finally breathed a sigh of relief.

But soon a new accident happened. When the crew boarded the destroyer, they found that the crew could not distinguish the direction and felt sick. To make matters worse, they can't recall what happened. Regardless of their physical condition, they were soon discharged from the military after the Citigroup Navy judged them to be "mentally unfit for service." The Citigroup Navy then withheld the information, and all records of the experiment were classified as top-secret documents.

According to some insiders at the time, something incredible happened to see the crew. Some of the crew felt sick and couldn't tell the way, some of the crew disappeared for no reason and some of the crew members were embedded in the wall, completely fused with the steel plates on the ship, and whether they were still alive is still to be determined. Later, after some crew members who participated in the forced retirement, they were affected by this experiment and always disappeared for no reason in their lives, and then reappeared, and no one knew why.

This experiment is suspected to be the Citigroup military looking for a way to open the door to another world, but the Citigroup military has not responded to any speculation from the outside world.

According to the latest opinion, the Philadelphia experiment is undoubtedly a matter under the action of high energy, which can not be distinguished by the human eye in an instant. There are countless articles, books, movies, and television that introduce and discuss it. On the Chinese website, there is an article "The Mysterious Space Breakthrough Experiment - An Introduction to the Citigroup Navy's Philadelphia Experiment", which provides a statement that makes the experiment even more miraculous: The main person involved in the experiment committed suicide a few days later, and before he died, he said that the experiment was related to Einstein's theory of relativity. This adds an extra layer of mystery to the experiment.

At that time, mankind was still shrouded in the shadow of World War II, and a large number of war archives were banned. Conspiracy theories, occultism, extraterrestrial biology, and more are waiting for an opportunity to flood society. When such a powerful news came out, it immediately caused people to boil. Conjectures abound about this series of questions. There are a lot of specific details added to it, and different versions have been derived. It is most widely known that the commander-in-chief of the Philadelphia experiment at that time was the genius physicist Nikola Tesla. But he was removed from his post because he insisted on refusing to let the crew experiment themselves. Later, von Neumann took over as commander-in-chief, and he was forced by the military to carry out the experiment. In addition, the experiment was done through Einstein's unified field theory, and Einstein himself participated in it.

Einstein's theory states that gravitational and electromagnetic fields are related, just as matter and energy can be linked by a formula (E=mc2). Although Einstein had not yet figured out the exact relationship between the gravitational and electromagnetic fields, the Philadelphia experiment had proved that there was a connection between the two fields. The entire experimental design was based on Tesla's idea of wrapping huge and heavy coils around each end of the hull. The direction of the winding of the coil is in a specific order, and when energized, the electromagnetic field generated is very strong, reaching the space-time around the curved hull.

The idea that the Citigroup Navy conducted long-range transmission experiments during World War II, perhaps even going back in time, only makes us doubt the incredible science that has developed since then. Over the years, the mystery has been further deepened by the fact that outstanding inventions by the likes of Albert Einstein and Nikola Tesla have been linked to the project.