Super-resolution imaging with wall penetrating radar
DGIST researchers develop an improved technology for detecting objects behind walls and structures.
- Expected to be widely utilized in rescue and anti-terrorism activities -
Last Monday, June 30, a penetrating radar system for super-resolution imaging of objects behind walls or obstacles was developed for the first time in Korea by the research team, led by Dr. Daegun Oh, a senior researcher of the Robot Systems Research Division at DGIST,
From the source technology to core module design, signal processing algorithm, and performance evaluation, the system was entirely developed by domestic technologies.
Based on the Multi-dimensional Shift Invariant Structure, it enabled the team to realize a better resolution of the system comparing to existing penetrating radars.
Dr. Oh’s team also developed a new algorithm of measuring distances to realize a real-time radar technology with low-complexity and super-resolution even in the restricted embedded system, simplifying the data processing system.
The super-resolution wall penetrating radar, which can detect hiding targets in a margin of error of just a few centimeters, was devised by applying the resource technology of super-resolution with low-complexity to the FMCW (Frequency Modulated Continuous Wave) penetrating radar system.
Considering that the radar can be utilized in various ways such as military and civilian industries, it is expected to bring a huge ripple effect through the introduction of the radar system.
The wall penetrating radar system has been utilized mainly for military purpose, using them for the situational understanding of enemies inside a building while the army is operating a counter-terrorism action plan, but in the future, it is expected to be used actively for civil purpose in establishing a Disaster and Emergency Management System by enabling rescuers to save people trapped in concrete or steel structures rapidly.
Dr. Daegun Oh says, “Even though researches on penetrating radar has been actively conducted in many countries, the wall penetrating radar research is still in its early stage.” He adds, “It is expected for DGIST to lead future penetrating radar technology area.”
Regarding the research results, two theses co-wrote by Dr. Oh (Senior researcher, Robot Systems Research Division at DGIST) and Dr. Jonghun Lee (Director, Robot Systems Research Division at DGIST), ‘An improved MVDR-Like TOA Estimation Without EVD for High-resolution Ranging System’ and ‘Robust Super-resolution TOA Estimation against Doppler Shift for Vehicle Tracking’ by Dr. Jonghun Lee, were published in the IEEE Communications Letters.
This research was conducted under supports from the Ministry of Science, ICT and Future Planning, through ‘DGIST R&D Program’ and the ‘MIREBraiN Researcher Start-up Program.’