Digital Radar World: From technologiesto applications

Jong Hun Lee
Jong Hun Lee
PL, Principal Researcher, Robotics Research System, DGIST, Korea
17:50~18:30,November 21st, 2013


Radar typically plays an important role in numerous military applications. Recently, radar technologies have been extended to various applications such as environmental, surveillance, traffic control, automotive, avionic, homeland security and defence, medical and other possible radar uses. A typical example is automotive radar. Automotive radar is applied to various passive as well as active safety systems such as pre-crash warning system and forward-looking collision mitigation and warning system.

Various radar-based safety systems including the abovementioned applications use FMCW and UWB radar. Generally, FMCW(Frequency-Modulated Continuous Wave) radar is used in long-range radar (LRR) applications due to its maximum detection range of about 200m while UWB(UltraWideBand) radar is short- range radar (SRR) due to its high- resolution capability of nearly 1m.

In this talk, various radar-based commercial applications will be briefly introduced, after which the current status of R&D and market estimation pertaining to automotive radar will be addressed. The operating principles and core components of FMCW and UWB radar systems for automotive applications are explained briefly. The core components of FMCW and UWB radar consists of a radar antenna, a radar transceiver and a radar signal processing component. Additionally, various core components and overall systems of FMCW and UWB radar developed by DGIST will be introduced in detail. For example, in case of FMCW radar, real-time FPGA- and DSP-based signal processing modules have been developed, and the core algorithms for extracting the range and velocity have been developed [1]. In addition, for UWB radar, DGIST has developed an antenna and transceiver module, a digital pulse generator and a number of signal processing algorithms. Specifically, memory-efficient signal processing and a fine frequency estimator will be explained.

Level-gauge radar is another commercial application with a fine instrumentation that can accurately measure the levels of various liquids, such as water or oil. Level-gauge radar requires very high accuracy within several millimeters and a maximum range of about 30m. To meet these requirements, DGIST has developed a new 24GHz UWB front-end module (FEM) and a fine frequency estimator for level-gauge radar. This UWB FEM is composed of a lens-type antenna and a 24GHz transceiver with a bandwidth exceeding 2GHz. This talk concludes a brief introduction of our DGIST level-gauge radar system.



Research Interests:

  • RadarSystem Design
  • MIMO/Multi-channel Radar
  • Multifunctional Radar(MFR)
  • Multi-dimensional Imaging Radar
  • Super-resolution radar algorithm
  • See-thru-the obstacle Radar
  • Automotive Radar
  • Meta-material based RF Cloaking & absorber


Educational Backgrounds:

  • Ph.D in ECE , SungKyunKwan Univ. (2002)
  • M.S in Electronics, SungKyunKwan Univ. (1998)
  • B.Sin Electronics, SungKyunKwan Univ. (1996)


Professional Experiences:

  • 150paperspublished and presentedand 70 patents filed
  • 6 technologies transferred
  • Adjunct Professor, Yeungnam Univ. (2007.3. –20011.12)
  • Senior Researcher, Telecom R&D center,Samsung Electronics company (2002-2005)


Awards and Honors:

  • Man ofDGIST of the year(2012)
  • Great minds of the 21stCentury (ABI, 2012,2013)
  • 2000 outstanding intellectuals of the 21stCentury (IBC, 2011)
  • Honor of Best researcherinDGIST(2007)
  • Best paper award in COOC(1999)