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How to control China's seas and seas? He gave the answer

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Liu Yongtan, an academician of the Chinese Academy of Sciences and the Chinese Academy of Engineering and a professor at Harbin Institute of Technology, is one of the winners of the National Science and Technology Award this year.

He devoted himself to the research of new system radar for nearly 40 years, built China's first new system radar experimental station, successfully developed China's first new system for sea long-range detection radar, and condensed a "radar iron army" in the northern frontier, realizing China. A leap-forward development of sea detection capabilities.

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Young experience buried in his heart to seed the country

Liu Yongtan was born in an intellectual family in Nanjing in 1936. He was devastated and displaced. This is his most profound memory of childhood. In addition, the mother told them ancient poetry under the oil lamp.

National Highest Science and Technology Award Winner Liu Yongtan

I remember the deepest is "Man Jiang Hong", angry and rushing to the crown, strong and fierce. I can recall the look of suffering. My father said that these disasters were formed because our country was too weak, so we were bullied. My father told us that we must grow up to change this situation.

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The seeds of indifferent fame and fortune and the country of the country were quietly sown in Liu Yongtan’s young mind.

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Facing the question, Liu Yongtan team made significant progress after thousands of experiments.

In 1958, Liu Yongtan became a young teacher of Harbin Institute of Technology through his studies at Harbin Institute of Technology and Tsinghua University. In 1979, he was sent to the UK to study abroad, mainly engaged in signal processing research. In the fall of 1981, Liu Yongtan learned to return to China. His heart has already aimed at a goal and created a new system radar in China.

Although the traditional radar is known as "Clairvoyance", the premise depends on how high it stands. The place outside the horizon is a blind spot of traditional microwave radar. A few Western powers in the world have begun to develop new system radars. Academician Liu Yongtan: "We signed the UN Convention on the Law of the Sea in the past, 200 nautical miles exclusive economic zone. You can't see how to manage it. This is obviously a major demand."

However, at the time, the new system radar on the global scale was just getting started. There is no information for reference, and there is no relevant technology for reference. Liu Yongtan’s thoughts brought a questioning voice.

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In the face of all this, Liu Yongtan did not waver. In his heart, the strategic needs of the country are the most important, and the success or failure of the individual is insignificant. With the support of the state, in the ten months, Liu Yongtan’s six-person team has produced more than 200,000 words of pre-research programs. Since then, after thousands of experiments and tens of thousands of test data, significant progress has been made in the key technologies and program demonstrations of the new system radar.

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It took eight years for the target to appear on the new system radar screen.

In 1986, Liu Yongtan began to host the "New System Radar Research" and build a new system radar experimental station. However, under the conditions of the laboratory, the results of the research are very frequent in the actual application scenario. The signal of the sea clutter is tens of thousands times higher than the signal strength of the target. The radar can't tell the truth. The goal.

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On April 3, 1990, the goal finally appeared on the screen of the new system radar. Over 8 years, the hardships that were not known to outsiders turned into joy and tears of success.

In 1991, the project won the first prize of the National Science and Technology Progress Award. In the same year, Liu Yongtan was elected as a member of the Chinese Academy of Sciences (academician). In 1994, he was elected as the first academician of the Chinese Academy of Engineering. In 1997, Liu Yongtan, who had already made a name for himself, once again made a weird decision, taking the lead in developing a practical new system radar.

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National Highest Science and Technology Award Winner Liu Yongtan

Some people persuaded me in good faith, meaning to do it again, it is a very difficult process. My thoughts are very simple. This is theoretically perfect, but there is still a considerable distance to really make it a perfect radar.

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Silently paying attention to everyone on the team

Liu Yongtan knows very well that the research on the new system radar takes 8 years. The application of the new system radar may take several years. How to build a stable and dedicated team is the fundamental guarantee for the success of the project.

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National Highest Science and Technology Award Winner Liu Yongtan

The most prominent example is that we have a young teacher who just graduated with me. We didn't let him go to the master's degree, and didn't go to the doctor. In the end, he was very experienced and could also guide doctoral students. But the school stipulates that you are neither a master's degree nor a doctoral degree. I insisted on approving him, and the school also supported me to approve him as a doctor.

Under this kind of care and care, Liu Yongtan's team has grown from a six-person team to a dozen-person electronic engineering technology research institute. This is also the confidence of Liu Yongtan to undertake the development task.

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Liu Yongtan: Honor belongs to this era

For more than ten years, this team from Harbin has been stationed on the beach for a long time. The hardships of the natural environment and living conditions are nothing to them. The most difficult thing is that all theoretical gaps and technical problems need to be filled by themselves. Go to conquer. It took more than two years to eliminate the problem of ionospheric interference.

In 2011, the development of a new system radar with full-time, all-weather and long-distance detection capability was successful, marking a major breakthrough in China's long-distance detection technology. In 2015, the team won the first prize of the National Science and Technology Progress Award. On January 8, 2019, Liu Yongtan won the National Science and Technology Award. Liu Yongtan feels that this honor belongs to the team and belongs to this era of great national rejuvenation.

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Academician Liu Yongtan

Under the prestigious name, this is a team thing. This team is not only a small team but also a team of domestic superior units to make a completely innovative thing. I think it is very in line with President Xi’s, our innovation, if you can’t come, you can’t buy it, you still have to do it yourself.


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