✦Satellite Obstacle Avoidance✦
Among all things, safety comes first
With irregular orbiting, experts and scholars will end up in tears
Want to know how a satellite avoids obstacles?
What are the traditional ways and algorithms of obstacle avoidance?
How to make sure a satellite travel safely in the preset orbit?
How to "stand out" as the Mask's Starlink Network results in hidden safety hazards?
Lecture 3 of Course "Question-driven Interdisciplinary Project Practice" - As for the nano and micro satellites collision avoidance and obstacle avoidance, Professor Ma Kaixue and Xu Jiangtao unveiled the mystery of how a satellite avoid collision and obstacles for us.
Member students of 4 "micro-satellite" enthusiasts interdisciplinary groups of Tianjin International Engineering Institute, based on the theory learned earlier, claimed their further investigation task. They conducted a week-long investigation and discussion about nano and micro satellite collision avoidance and obstacle avoidance technology before the class, and shared their own investigation results in the flipped classroom. The supervisors who give the lecture commented on the investigation results presented by the students in each group, and had an in-depth analysis and explanation on nano and micro satellite collision risk factors, collision avoidance and obstacles avoidance technology, satellite-borne imaging and nano and micro satellite, radar system and relevant chip, and the ideas about satellite collision avoidance system, etc. The supervisors also discussed with the students about existing problems and pointed out the direction for further "deep probing".
Learning reflections from "micro-satellite" enthusiasts
Deng Yeting
✦
As more and more satellites are launched by various countries, the chances that a satellite collides with various space junks or other satellites are on the rise. How to enable a satellite to avoid obstacle is an urgent issue requiring in-depth study. Being an open research subject, there is fewer study on how a nano and micro satellite avoids obstacle at present. Our group tries to figure out various methods for spatial obstacle avoidance and relevant algorithms for satellite obstacle avoidance mainly by means of literature research, and explores the possibility of applying spatial obstacle avoidance on satellite obstacle avoidance through comparison and analysis.
Mao Zezheng
✦
We have a basic understanding of existing obstacle-avoidance sensors after this course, including ultrasonic sensor, IR sensor, laser sensor, etc. We explored and compared their operating principle, summarized in the end and shared the result. We also understand more about "Starlink" satellite system and understand better the importance of obstacle avoidance.
Ma Xiaotian
✦
We have a deep understanding of nano and micro satellite's obstacle avoidance and its basic concept. By comparing and studying various ways of obstacle avoidance and algorithms, and comparing and studying their merits and demerits, we can figure out a final plan we always want based on our own demand. The supervisors also broaden our knowledge in the area of expertise, providing us a better insight in the cutting-edge technologies both at home and abroad.
Zhen Zhizhuo
✦
I have a profound understanding of relatively commonly-used collision avoidance methods at present through the supervisors' explanation and classmates' analysis and introduction, for example radar-based collision avoidance, vision-based collision avoidance, IR-based collision avoidance and ultrasonic wave-based collision avoidance. However, I also learned that there is fewer study on satellite collision avoidance in the world so far. With an explosive growth in the numbers of satellite launched, satellite collision avoidance will surely become a hot research subject in the future. I have some insight into the prospect and algorithm of satellite collision avoidance at present in the flipped classroom through the introduction of classmates, which broadens my horizon and is quite fruitful.
Yang Haoran
✦
I have a deeper understanding of nano and micro satellite's obstacle avoidance through the supervisors' explanation and the presentation by other groups of "micro-satellite" enthusiasts in this class. Our task is to probe into the spatial obstacle avoidance method and make comparison, and understand the concept of nano and micro satellite's obstacle avoidance and composition of a collision avoidance system. I emphatically summarized MPC, a spatial obstacle avoidance algorithm, including its features, operating principle, basic characteristics and parameters. In addition to the understanding of obstacle avoidance algorithm, I hope we can achieve deeper research results in nano and micro satellite's collision avoidance system in future research and study through my own professional knowledge and joint efforts from all "micro-satellite" enthusiasts.
✦Supervisors for lecture 3✦
Professor Ma Kaixue
Dean of School of Microelectronics, Tianjin University
Chair professor of Tianjin University
Doctoral supervisor
Director of Tianjin Key Laboratory of Imaging and Sensing
Winner of "The National Science Fund for Distinguished Young Scholars" Program
Leader of the Innovative Team in Key Sector of Innovative Talent Promotion Program of Tianjin City
Professor Ma has proposed new type electromagnetic manipulation and various novel microwave integrated circuits based on CMOS, SiGe, BiCMOS, GaAs and SOI, among other technologies, as well as the technology for designing and realizing SISL circuit system. His research findings have been transformed into featured products, which are exported to Europe and USA or used in in-orbit satellites and ground communication system in China. His research helps design, encapsulate and system-test the first low energy reconfigurable 60 GHz SiGe MMW system SOC that is used in a high-speed wireless communication system. His achievements are covered by dozens of technology-oriented media and nominated as Emerging Technology Award by Singapore Infocomm Technology Federation.
Professor Xu Jiangtao
Vice Dean of School of Microelectronics, Tianjin University
Professor of School of Microelectronics, Tianjin University
Doctoral supervisor
Research field: Image sensor chip and camera system, design of digital-analog hybrid IC, sensing-computing integrated intelligent vision chip and system
His main work is teaching and scientific research in microelectronics, including low-light large dynamic range imaging chip, 3D imaging chip, intelligent bionic imaging chip, 100-megapixel imaging chip, etc. He once served as the responsible person for over 20 projects like national major special technology project, national key R&D plan and key projects of National Natural Science Foundation of China. He has published more than 100 dissertations in SCI, and has over 60 authorized patents for invention. He is the winner of Excellence Award of 22nd China Patent Award, gold award of 2019 Tianjin Patent Award, first prize of Tianjin Award for Scientific and Technological Progress in 2018 and 15th Tianjin Youth Science and Technology Award, etc.
After the lecture about the nano and micro satellite collision-avoidance and obstacle avoidance, the "micro-satellite" enthusiasts will further their study and build a "satellite" dream together.
The future is promising, and there are more to expect...
