He's a national champion,Long engaged in space terahertz detection and remote sensingResearch on radar target characteristic measurement technology,"Committed to innovation, science and technology to serve the country"Is his scientific pursuit,"Adhere to the original heart, moral cultivation"He's the one who cultivates the ethics of the church,Let's come closer togetherProfessor, School of Integrated Circuits and Electronics, Beijing Institute of TechnologyDoctoral supervisor Hu Weidong。

I have never had a "double break" since I started my PhD.。Such a busy Hu Weidong happy, just because the hands hold two "ruler", a teaching "ruler", for the party to educate people, for the country to educate talent;A "ruler" of scientific and technological innovation, using terahertz technology to measure the world, achieve accurate measurement, and serve the important fields of the country。

Learn to cast the soul, to be determined to power the north Li workers

Ben, master and doctor all studied in the Beijing Institute of Technology, Hu Weidong can be said to be a "native" worker of the Beijing Institute of Technology。In the 20 years of scientific research experience, both the joy of success, but also behind the little-known hardships, the real support for him to go on is the generation of Beili workers inherited "determined to strengthen the country, the pursuit of excellence" spirit。"My teacher Professor Deng Ciping brought me a deep influence, Mr. Deng is China's first generation of experts engaged in millimeter wave technology research, he is willing to step up the ladder, silently dedication, for the construction of national key areas made an important contribution, let me deeply touched, determined to become like him.。During his doctoral study, Hu Weidong established the research direction of millimeter wave and terahertz technology。

In the exploration of terahertz science and technology, tears and sweat often go hand in hand。In 2017, Hu Weidong received an urgent task to complete the development of ultra-wideband terahertz system in just two months。At that time, the domestic research in related fields was still relatively weak, how to achieve high sensitivity and high resolution imaging, while ensuring the stability of the system？This problem involves many aspects such as signal processing, instrument design and algorithm optimization。In the process of research, it is necessary for each participant to study deeply and explore the scientific principles behind various technologies down to earth, and it is necessary for the team to "cooperate and communicate frequently" with each other to solve the integration problem of the whole system。"At that time, we had a lack of technical knowledge and hardware conditions。In order to let the students quickly have an in-depth understanding of the radar system, I also made a great determination to dismantle a set of "meritorious" radar system in the laboratory to help them quickly grasp the components of the radar system。Talking about radar development, Hu Weidong talked about the hardships at the beginning。

Hu Weidong took a photo with the team

After the team completed the overall design of the terahertz system and the development of key components, the whole machine has become a problem that must be solved。Due to the lack of high-end test system, the joint adjustment of UWB terahertz system must rely on the measurement platform of other units。At that time, it was the height of summer in Beijing, and Hu Weidong and his students got up early and worked late to travel from the Zhongguancun campus to Liangxiang for a joint test。The heat in the laboratory is unbearable, and there are many problems in the development of the system, and many students have the idea of quitting。Hu Weidong withstands pressure, does everything personally, always fights in the front line of scientific research, and encourages and motivates team members with his own struggle experience, so that everyone can maintain the confidence to win。He also bought a refrigerator for the laboratory out of his own pocket, and during that time, the refrigerator was always full of cold drinks and popsicles...Hu Weidong's encouraging demonstration and caring played a huge role, and the team members gradually got rid of the confusion and confusion, and began to actively think and explore。Through continuous trial and error and improvement, they gradually conquered one technical problem after another。Under the leadership of Hu Weidong, the development of ultra-wideband terahertz systems has made remarkable progress。Finally, after months of hard work, the team led by Hu Weidong successfully developed a prototype of the ultra-wideband terahertz imaging system。This achievement has aroused wide attention and appreciation in academia and industry。The team members are proud and satisfied that their determination to win has finally become a reality。

Hu Weidong often encouraged himself and his students: every scientific researcher will encounter difficulties and challenges in study and work，In the world of research，It's normal to have problems，No problem is abnormal，You must have the courage to deal with problems，Down to earth and constantly "fight monsters to upgrade"，To be able to serve our country。

Promoting work by learning, adding application wings to scientific research

To promote terahertz technology and truly contribute to the country and society has always been the goal of Hu Weidong。"To maintain the vitality of a science and technology, it can not only be limited to theoretical research, it must be combined with the actual application needs, so that the application of scientific research inserted" wings"。Hu Weidong talked about。In 2015, with the efforts of team members, they found the combination point of terahertz technology and meteorological detection, and obtained the strong support of the National Natural Science Foundation, and the major scientific research instrument project "high sensitivity millimeter wave Terahertz dual-frequency common aperture joint coherent cloud radar" successfully landed in Beijing Institute of Technology。In the process of the project, the team raced against time and independently developed the 220GHz/340GHz dual-frequency terahertz receiving array, becoming the pioneer of high-power terahertz radar in China, two years ahead of NASA and the European Space Agency。

Hu Weidong and his students participate in China Microwave Week

After emerging in macroscopic detection applications, terahertz detection technology has also achieved impressive results in microscopic measurement。Based on the frequency division TDM quasi-optical synthesis ultra-wideband terahertz signal generation technology proposed by Hu Weidong's team, the team independently developed a terahertz high-speed sweep frequency system to achieve 1.1THz ultra-high bandwidth, won the national key project funding。The research results won the second prize of technical invention of Chinese Electronics Society。

Adhere to the guidance of serving the major national strategies，Hu Weidong's team aims at key national core issues，The developed terahertz radar is the only means used in online nondestructive testing of aerospace composites in China，It has broad market prospects and good social benefits in integrated circuit testing, cultural relic testing, etc.The passive Teherz security imaging system is used for security checks at airports, subways and customs，It has the characteristics of non-contact, no radiation, no perception, no stay, etc，It was used in the Beijing Winter Olympics venues。Hu Weidong introduced, "In the past, the research and application of terahertz technology has been subject to many limitations, such as the stability of high-power frequency sources and bandwidth limitations, our research fills these gaps and opens up new possibilities for research and application in the field of terahertz.。”

Beijing Satellite TV reports that Hu Weidong led a team of technology to help Beijing Winter Olympics

Wechat Earth's "change of face" helps China's weather satellite distinguish the "wind and clouds"。2017年，Based on the scientific research project "Fengyun-4 Weather Satellite Remote sensing resolution Enhancement Technology"，Hu Weidong's team increased the ground resolution of satellite remote sensing from 70km to 38km，The aperture of the deployable antenna of the atmospheric remote sensing radiometer can be reduced from 5 meters to 3 meters，Greatly reduce the size and weight of the payload，Save a lot of money for our country。In 2022, terahertz remote sensing technology is applied to the Beijing Winter Olympics to accurately forecast and monitor the weather and environment of the Winter Olympics venue at all times, and escort the smooth conduct of the competition。It is worth mentioning that the world's first geostationary orbit microwave detection satellite Fengyun-4 microwave satellite has entered the development stage, and terahertz technology will be applied in it。

He has presided over and participated in major scientific instrument projects of the National Natural Science Foundation and major projects such as civil aerospace terahertz imaging.The research achievements won the third prize of national science and Technology, the second prize of Beijing Science and Technology Progress, the second prize of Technology invention of Chinese Society of Electronics, and the second prize of science and technology of China Radio Association.Published 50 papers in journals and international conferences，18 national invention patents were authorized，Published the academic monograph "Space Terahertz Remote Sensing Technology"。

Hu Weidong, as the person in charge of terahertz issues of the Chinese delegation, fought for China's spectrum rights and interests

In addition, Hu Weidong participated in the ITU Wireless Group meeting many times, as a member of the Chinese delegation on spectrum planning for the country。

Learn to increase wisdom, to train innovative talents for the needs of the country

In Fangshan County of Shanxi Province and Pinggu district of Beijing, two miniaturized meteorological observation stations have carried out meteorological disaster monitoring for local crop production, safeguarding agricultural production。This is the result of the efforts of the Terahertz graduate student practice Group under the guidance of Hu Weidong。The practical results won the first prize in the 2023 Action plan for the Rural Revitalization of teachers and students service in Capital universities。"Mr. Hu pays special attention to cultivating our practical ability，Always told us, 'We have to get in，It will be useful again. '，'It is false to talk about war on paper.'，He particularly encouraged us to apply what we had learned according to the needs of the country，Pay more attention to the cutting-edge applications that can be landed，This is also the "root" of our future based on society and serving the motherland.。Liu Qingguo, head of the practice group and a master's student, said so。

As a teacher，To cultivate leading talents who have family and country in mind，It has always been the goal of Hu Weidong's persistence and efforts，"We must be guided by national needs，Attach importance to practice and strengthen exchanges，On the one hand, strengthen ideological and political education，Stimulate students' national self-esteem, sense of responsibility and sense of mission;On the one hand, it cultivates students' innovative thinking and ability to solve practical problems。”

In the past five years, Hu Weidong has undertaken the teaching work of undergraduate courses "Analog Electronics", graduate courses "Modern microwave Network Theory and New Technology" and "Microwave Remote Sensing", and doctoral courses "Frontier Technology of Electronic Science" in Xu Teli College。In addition, he also served as the head teacher of the Qiangji Class of North Science and Technology in Middle School 101, responsible for guiding the "Innovative Project Curriculum".。In the teaching process, Hu Weidong pays attention to the characteristics of students, from high school to doctoral stage, skillfully guide students to cultivate interest, gradually into the best, master systematic knowledge。

High school students are still in the stage of laying the foundation, the grasp of the basic knowledge of science and electronics is still very limited, and the lack of in-depth understanding of the subject。Therefore, he cleverly uses vivid and interesting ways to ignite students' desire for knowledge with fascinating cases and experiments, encourages students to do extracurricular reading and independent thinking, and guides them to gradually master relevant knowledge, so as to let the mysteries of electronics bloom in their hearts。

Hu Weidong and students of Beijing 101 Middle School carry out winter camp activities

The undergraduates who enter the university campus already have certain basic knowledge, but need to further cultivate research ability and innovative thinking。Hu Weidong carefully guides students to conduct independent research projects and experimental design, cultivating their problem-solving ability and shaping their innovation potential。He encouraged students to actively participate in academic exchanges and scientific research activities, build scientific cooperation networks, and gain insight into the latest research frontiers。He inspires his students to go deep into their research fields, dares to ask independent research questions, carries out in-depth experimental and theoretical research, and provides personalized guidance and support to students to help them overcome difficulties and challenges in their research。

Hu Weidong explains the experiment to undergraduates

In the classroom, he encourages students to participate in practical projects, teamwork and research activities, providing guidance and support。In the undergraduate course "analog electronics" teaching process，He asked students to work in small groups to complete an innovative analog electronic design，"The courses in the first level of electronic science and technology are very difficult，Electromagnetic waves can't be seen or touched，When I first took the course Fundamentals of Electromagnetic Fields，Many students really talk about electromagnetic field color change。I don't think it will work in the long run，The ability of students to do practical work must be increased，When I can't, I record some of the vivid results in my lab on video，Allow students to participate in scientific research experiments as much as possible，And more visually perceive the existence of waves and fields，In this way, many concepts and difficulties will be solved easily，The learning effect of students has also been greatly improved。"Hu Weidong said。

Hu Weidong directs the field experiment of graduate students

For graduate training, Hu Weidong consciously let students participate in national scientific research tasks, let them become the person in charge of a small project, and transform scientific research resources into practical education resources。The students' scientific research results are applied to major national needs, the sense of pride and mission arises, and the scientific research ability is also improved。Hu Weidong admitted that as a teacher, the greatest happiness is to see batches of excellent students grow into talents, and the success of students will always be his greatest pride and achievement。

Taught for many years，Hu Weidong supervised more than 70 graduate students，The students' scientific research achievements are frequent，He has published more than 20 high-level papers in top international journals in signal processing and microwave remote sensing，2 people won the title of "Beijing Outstanding Graduates"，1 person won the national scholarship for postgraduate study，1 person received SMC scholarship，20 people won the honorary titles of "Outstanding Student Model" and "Outstanding Student Leader of the School"。After graduation, 80% of the graduate students under his guidance strive to work in key fields of the state。

Hu Weidong took a photo with the graduates

Looking forward to the future, Hu Weidong will continue to deepen in the field of terahertz, with the goal of breaking through key technologies, exploring interdisciplinary integration, and cultivating new subject growth points;Adhere to the original heart of moral education, take on the mission of teaching and educating people, and transport scientific and technological talents worthy of great responsibilities for the country。