A robust horizontal LOS rate estimator for 2-axes gimballed seeker. - Won-Sang Ra; Ick-Ho Whang (CDC, 2002)

Robust Kalman filter design via Krein space. - Tae Hoon Lee; Won-Sang Ra; Tae Sung Yoon; Jin Bae Park (ICARCV, 2002)

Robust filtering for linear discrete-time systems with parametric uncertainties: a Krein space estimation approach. - Tea Hoon Lee; Won-Sang Ra; Tae Sung Yoon; Jin Bae Park; Soo Yul Jung; Joong Eon Seo (CDC, 2003)

Recursive robust H∞ filtering within the framework of set-valued estimation. - Won-Sang Ra; Seung Hee Jin; Tae Sung Yoon; Jin Bae Park (CDC, 2004)

Robust Extended Kalman Filtering via Krein Space Estimation. - Tae Hoon Lee; Won-Sang Ra; Seung Hee Jin; Tae Sung Yoon; Jin Bae Park (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2004)

Multiple Hypothesis Tracking in Generalized Hough Transformed Images. - Ick-Ho Whang; Won-Sang Ra (CDC, 2006)

Real-Time Robust Pinch Detection Algorithm for Automobile Applications. - Won-Sang Ra; Hye-Jin Lee; Tae Sung Yoon; Jin Bae Park (ITSC, 2006)

Practical Pinch Detection Algorithm for Smart Automotive Power Window Control Systems. - Won-Sang Ra; Hye-Jin Lee; Jin Bae Park; Tae Sung Yoon (IEEE Trans. Ind. Electron., 2008)

Fast time-frequency domain reflectometry based on the AR coefficient estimation of a chirp signal. - Seung Ho Doo; Won-Sang Ra; Tae Sung Yoon; Jin Bae Park (ACC, 2009)

A novel missile warhead tracking algorithm based on geometric data association. - Seul-Ki Han; Won-Sang Ra; Jin Bae Park (CDC, 2012)

Warhead tracking based on probabilistic data association filter with feature information. - Seul-Ki Han; Won-Sang Ra; Jin Bae Park (IECON, 2013)

Compensated robust least-squares estimator for target localisation in sensor network using time difference of arrival measurements. - Ka Hyung Choi; Won-Sang Ra; Jin Bae Park; Tae Sung Yoon (IET Signal Process., 2013)

Robust Least Squares Approach to Passive Target Localization Using Ultrasonic Receiver Array. - Ka Hyung Choi; Won-Sang Ra; So-Young Park; Jin Bae Park (IEEE Trans. Ind. Electron., 2014)

Optimal formation of cooperative multiple UAVs for enhancing passive target tracking performance. - Young-Kwang Jung; Yunha Lee; Won-Sang Ra (IECON, 2016)

Leader-follower formation control of multi-robot without communication links. - Yunha Lee; Ui-Suk Suh; Won-Sang Ra (IECON, 2016)

Robust bearing angle estimator for low-cost 1-axis gimballed ultrasonic seeker. - Ui-Suk Suh; Yunha Lee; Won-Sang Ra (ISIE, 2017)

A note on sensor arrangement for long-distance target localization. - Sung-Ho Kim; Joonha Park; Wansang Yoon 001; Won-Sang Ra; Ick-Ho Whang (Signal Process., 2017)

Robust Bearing Angle Error Estimation for Mobile Robots With a Gimballed Ultrasonic Seeker. - Ui-Suk Suh; Yunha Lee; Won-Sang Ra; Tae Wook Kim (IEEE Trans. Ind. Electron., 2018)

Time-Varying Radome Slope Estimation for Passive Homing Anti-Ship Missiles. - Won-Sang Ra; Sejoon Ahn; Yunha Lee; Ick-Ho Whang (CDC, 2019)

Consistent Kalman Filter for Distributed Target Tracking with Polar Measurements. - Yunha Lee; Won-Sang Ra; Ui-Suk Suh; Ick-Ho Whang (IECON, 2019)

Sequential Coordinates Conversion and Decoupled Linear Tracking for Airborne AESA Radars. - Boyoung Jung; Dahye Ham; Won-Sang Ra (CDC, 2020)

A Robust Passive Target Localization for Substation Inspection of UAV in a GPS-denied Environment. - Ui-Suk Suh; Tae-Wan Kim; Dong-Hwa Kang; Kang-Min Lee; Won-Sang Ra; Taewook Kim (ICIT, 2021)

Improved Aerodynamic Coefficient Identification Using Non-Conservative Robust Kalman Smoother. - Jieun Han; Han-Sung Lee; Won-Sang Ra (IECON, 2022)

Accurate Clutter Synthesis for Heterogeneous Textures and Dynamic Radar Environments. - Donghoon Kim; Andrew Junghoon Park; Ui-Suk Suh; Dongwoo Goo; Donghwan Kim; Boram Yoon; Won-Sang Ra; Sanghoek Kim (IEEE Trans. Aerosp. Electron. Syst., 2022)

Passive IR-UWB Localization System for UAV-Based Electric Facility Inspection During GPS Outage. - Ui-Suk Suh; Geunhaeng Lee; Jieun Han; Tae Wook Kim; Won-Sang Ra (IEEE Access, 2023)

Ballistic Target Tracking Using Range Spread Measurements of a Wideband Radar Seeker. - Boyoung Jung; Chan-Seok Lee; Won-Sang Ra (FUSION, 2024)

Re-entry Target Identification with RCS Measurements Considering Multi-radar Geometry. - Sung-Joo Lee; Boyoung Jung; Seung-Jin Park; Won-Sang Ra (FUSION, 2024)

Free Space Detection Using Automotive Radar. - Seon-Gyo Jeong; Sung-Joo Lee; Seul-Ki Han; Won-Sang Ra (IEEE SENSORS, 2024)

Minimum-Waypoint Figure-Eight Trajectory Shaping for Airborne Wind Energy Systems. - Kwang-Hee Han; Jieun Han; Won-Sang Ra (ISIE, 2024)