Lead
Li Deren, academician of the Chinese Academy of Sciences and executive director of the China Remote Sensing Association, said in an interview with the media that the resolution of China's remote sensing satellites has surpassed that of the United States KH-12 reconnaissance satellite, and China's remote sensing satellites have been able to lock on foreign aircraft carriers, and even be able to lock on to F-22 stealth fighters in space, according to Academician Li, as of now, the resolution of the United States' KH-12 reconnaissance satellite is 0.1 meters, so China's Gaofen-11 satellite, Can GF-16 really achieve a resolution of 0.1 meters?
Gaofen series of satellites.
Since 1976, the mainland developed the first remote sensing satellite, after years of development and construction, the mainland's remote sensing satellites have been able to achieve global remote sensing mapping, and at the end of 2017, the mainland successfully launched the Gaofen-16 satellite, by the end of 2019, the mainland's Gaofen series of satellites are running in a sun-synchronous orbit of about 2000 kilometers, and have realized that multiple satellites work together to find moving targets at sea, which is more advantageous than a single satellite. On the one hand, it can effectively prevent all kinds of garbage in space from re-entering the atmosphere to harm human beings, and on the other hand, this way of working multiple satellites can greatly improve the speed of data transmission.
After the Gaofen-16 satellite was launched, the United States questioned the mainland's high-resolution reconnaissance satellites, believing that this is also an inevitable competition between major powers; as a rising power, China naturally has the capital to compete with the United States, but the United States believes that China is copying, and that China's remote sensing satellites are certainly not as advanced as the KH-11 series reconnaissance satellites of the United States.
The KH-11 series reconnaissance satellite of the United States is a reconnaissance satellite successfully developed by the United States in 1976 after more than 5 years, until 2013, the United States did not admit that there is a KH-11 series of reconnaissance satellites, and announced the performance parameters of the KH-11 series reconnaissance satellites, the KH-11 series of reconnaissance satellites are mainly used for ground target cloud analysis, and the reverse method is used for orbit determination, so as to intercept the enemy's communication signal, so that the location of the enemy's communication signal can be discovered. Then the enemy target is tracked, the radio frequency reconnaissance is transmitted to intercept the enemy's radar signal, and then the signal is analyzed.
Since the KH-11 series reconnaissance satellites of the United States use high-precision optical mirrors and advanced technology, Its resolution reaches 0.05 arc seconds, that is to say, the United States KH-11 series reconnaissance satellites can observe targets with a size of 6 centimeters on the ground, and the United States also has more advanced KH-12 series reconnaissance satellites, the United States in addition to announcing the relevant information of KH-11, and for the relevant information of KH-12, the United States is more strict in secrecy, so at present there are only a few sparse and sparse information on KH-12.
Generally speaking, the resolution of the high-resolution satellite has reached 0.1 meters, which is basically the same as the performance of the KH-12, and Academician Li publicly stated that the resolution of the high-resolution satellite has reached 0.1 meters, which actually shows that the resolution of the high-resolution satellite has reached the international first-class level.
Multi-sensor remote sensing image fusion theory.
With the theory of multi-sensor remote sensing image fusion, it can be fused with multi-source data and observed from different angles, so that the efficiency of remote sensing data can be greatly improved.
If you only use the resolution of the high-resolution satellite to compare with the resolution of the KH-12 satellite of the United States, then there is no difference between the continental and American satellites, but the performance of the satellite is not only determined by the resolution, but also by many other performance parameters, so when we claim that the performance of the continental satellite has surpassed the KH-12 satellite of the United States.
It is precisely because of this that China's satellite technology can occupy a certain right to speak in the world, and China is not only the second in the world in terms of global meteorological satellites and communication satellites, but also the resolution of the mainland's remote sensing satellites is also the first in the world.
In the new era, the mainland's satellite technology is also in the leading position in the world, and it can be said that the mainland's remote sensing satellites have surpassed the US KH-12 series of reconnaissance satellites, especially the Gaofen-11 satellite, which announced its target on overseas websites after it was launched, and it can be said that the performance of the Gaofen-11 satellite is recognized.
In particular, the cooperation between many scientific research institutions and world-class scientific research institutions on the mainland, coupled with the mainland's domestic talent reserves, makes it no longer necessary for the mainland to rely on the technology of other countries for its satellite technology, and the mainland's technological level is expected to become the world's leader, and this is exactly what the United States is most worried about.
"Oriental Eye" constellation project.
The mainland has started the mainland's "Oriental Insight" constellation project, which plans to have more than 200 satellites in orbit by 2030, which are mainly used for communications, navigation, remote sensing, and so on, mainly for major purposes such as national defense and national security.
Before 2030, the continent's battle for space will start, and at that time, the continent's satellite industry will reach its peak, before that, the continent still has a long way to go, and the continent's satellites will provide information data for the continent in high-density and high-frequency space, which is of great strategic significance to the continent.
This will put an end to the US monopoly in the satellite industry, and it will also become a new milestone in the mainland's satellite technology.
At present, the mainland's Beidou system has covered the whole world, and there is the continent's navigation system, communication system and remote sensing satellite system, and the continent has been in a leading position.
The mainland's remote sensing satellite technology can be used not only for national defense and national security, but also for environmental monitoring, resource management, climate change, etc., all of which can be carried out using the mainland's remote sensing satellite system.
At present, the continent can already monitor many aspects of the continent through the remote sensing satellite system, and is expected to become a leader in remote sensing satellites, adding a continent's own map to the global map.
The mainland's remote sensing satellite technology is not only used for the mainland's national defense satellites, but also many will be used in national construction, for example, it will be used in the civilian field, which will be of great help to the mainland's social and economic development, as well as agricultural production, resource survey, environmental protection, and so on.
epilogue
Academician Li Deren's remarks not only enabled the people of the mainland to occupy a place in the international arena for the mainland's satellites, but also allowed the mainland's satellites to occupy a place in the world, making the mainland's right to speak stronger, and conducive to making the mainland's voice in the fields of global satellite communications, navigation, and remote sensing more powerful.
At the same time, the theory of multi-sensor remote sensing image fusion proposed by Academician Li will provide useful ideas for the development of the mainland's satellite technology and be conducive to the further development of the mainland's satellite technology.