Publications
International Journals
- Nak yong Ko, Gyeongsub Song, Wonkeun Youn and Sung Hyun You. "Lie Group Approach to Dynamic-Model-Aided Navigation of Multirotor Unmanned Aerial Vehicles." IEEE Access (2022): 72717- 72730.
- Youn, Wonkeun, and Nak Yong Ko, et al. "A novel multiple-model adaptive Kalman filter for an unknown measurement loss probability." IEEE Transactions on Instrumentation and Measurement 70 (2020): 1-11.
- Ko, Nak Yong, and Gyeongsub Song, et al. "Three-dimensional dynamic-model-aided navigation of multirotor unmanned aerial vehicles." IEEE Access 7 (2019): 170715-170732.
- Pradhan, Sajina, Youngchul Bae, Jae-Young Pyun, Nak Yong Ko, and Suk-Seung Hwang. "Hybrid TOA trilateration algorithm based on line intersection and comparison approach of intersection distances." Energies 12.9 (2019): 1668.
- Subedi, Santosh, Hui-Seon Gang, Nak Yong Ko, Suk-Seung Hwang, and Jae-Young Pyun. "Improving indoor fingerprinting positioning with affinity propagation clustering and weighted centroid fingerprint." IEEE Access 7 (2019): 31738-31750.
- Ko, Nak Yong*, Seokki Jeong, Suk-Seung Hwang, and Jae-Young Pyun. "Attitude estimation of underwater vehicles using field measurements and bias compensation." Sensors 19.2 (2019): 330.
- Ko, Nak Yong*, Wonkeun Youn, In Ho Choi, Gyeongsub Song, and Tae Sik Kim. "Features of invariant extended Kalman filter applied to unmanned aerial vehicle navigation." Sensors 18.9 (2018): 2855.
- Ko, Nak Yong, et al. "Comparison of Attitude Estimation Methods for Underwater Navigation." International Journal of Mechanical Engineering and Robotics Research 7.3 (2018).
- Lee, Yeongjun, Jinwoo Choi, Nak Yong Ko, and Hyun-Taek Choi. "Probability-based recognition framework for underwater landmarks using sonar images." Sensors 17.9 (2017): 1953.
- Hyun-Su Kim, Jong-Koo Park, Tae-Yong Kuc, Nak Yong Ko, Yong-Seon Moon. "A formation and traction control design for multiple mobile robots." International Journal of Control, Automation and Systems 15.3 (2017): 1287-1301.
- Ko, Nak Yong*, Seokki Jeong, and Youngchul Bae. "Sine rotation vector method for attitude estimation of an underwater robot." Sensors 16.8 (2016): 1213.
- Ko, Nak Yong, Tae Gyun Kim, and Hyun Taek Choi. "Synchronous and asynchronous application of a filtering method for underwater robot localization." International Journal of Humanoid Robotics 13.02 (2016): 1550038.
-Han, Jun Hee, and Nak Yong Ko. "UKF Localization of a Mobile Robot in an Indoor Environment and Performance Evaluation." Journal of Korean Institute of Intelligent Systems 25.4 (2015): 361-368.
- Ko, Nak Yong. "Extended RMRC and its Application to the Motion of a Mobile Manipulator." International Journal of Humanoid Robotics 12.02 (2015): 1550016.
- Ko, Nak Yong*, and Tae-Yong Kuc. "Fusing range measurements from ultrasonic beacons and a laser range finder for localization of a mobile robot." Sensors 15.5 (2015): 11050-11075.
- Lee, Young-Pil, Yong Seon Moon, and Nak Yong Ko, et al. "Measurement of DS-CDMA propagation distance in underwater acoustic communication considering attenuation and noise." International Journal of Fuzzy Logic and Intelligent Systems 15.1 (2015): 20-26.
- Lee, Young-Pil, Yong Seon Moon, and Nak Yong Ko, et al. "DSSS-Based Channel Access Technique DS-CDMA for Underwater Acoustic Transmission." International Journal of Fuzzy Logic and Intelligent Systems 15.1 (2015): 53-59.
International Conferences
- Da Bin Jeong and Nak Yong Ko*, et al. "Use of Lie Group Theory for Dead-reckoning of a Mobile Robot." 2021 The 22nd International Symposium on Advanced Intelligent Systems(ISIS 2021).
- Henok Tegegn Warku, Nak Yong Ko*, Hong Gi Yeom and Woong Choi. "Three-Dimensional Mapping of Indoor and Outdoor Environment Using LIO-SAM." 2021 21st International Conference on Control, Automation and Systems(ICCAS 2021).
- Nak Yong Ko and Gyeongsub Song, et al. "Fault Detection and Diagnosis of Sensors and Actuators for Unmanned Surface Vehicles." 2021 21st International Conference on Control, Automation and Systems(ICCAS 2021): 1451-1454.
- Takuma Kano, Liang Li, Nak Yong Ko and Woong Choi*. "Calculation of Mahjong Score using AI." 2021 21st International Conference on Control, Automation and Systems(ICCAS 2021): 1459-1462.
- Woosung Choi, Honggi Yeom* and Nak Yong Ko. "Multi-Functional Brain-Computer Interface." 2021 21st International Conference on Control, Automation and Systems(ICCAS 2021).
- Shogo Sekiguchi, Liang Li, Nak Yong Ko and Woong Choi*. "Posture Recognition System using Depth Sensor." 2021 21st International Conference on Control, Automation and Systems(ICCAS 2021): 1463-1466.
- Song, Gyeongsub, and Nak Yong Ko*, et al. "Kalman Filter in SE (3) for Pose Estimation of a Mobile Robot in Three-Dimensional Space." 제어로봇시스템학회 국제학술대회 논문집 (2020): 1322-1323.
- Ko, Nak Yong, and Kim, Tae Gyun et al. "3 Dimensional application of SLAM for ground navigation." 2017 17th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2017.
- Nak Yong Ko*, Seong Ju Lee, and Seokki Jeong et al. "Attitude estimation of an unmanned surface vehicle using MEMS-AHRS and GNSS." 2017 17th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2017.
- Nak Yong Ko, and Tae Gyun Kim, et al. "Improving SLAM Performance Using Intertial measurements." International Symposium on Advanced Intelligent Systems(2017): 736-740
- Seong Ju Lee, Yong Seon Moon, and Nak Yong Ko*, et al. "A method for object detection using point cloud measurement in the sea environment." 2017 IEEE Underwater Technology (UT). IEEE, 2017.
- Nak Yong Ko*, and Seokki Jeong, et al. "Fusion of multiple sensor measurements for navigation of an unmanned marine surface vehicle." 2016 16th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2016.
- Nak Yong Ko*, et al. "Navigation of Unmanned Surface Vehicle and Detection of GPS Abnormality by Fusing Multiple Sensor Measurements." OCEANS 2016 MTS/IEEE Monterey. IEEE, 2016.
- Ko, Nak Yong*, et al. "Attitude estimation using depth measurement and AHRS data for underwater vehicle navigation." OCEANS 2016-Shanghai. IEEE, 2016.
- Nak Yong Ko*, Seokki Jung, and Youngchul Bae. "Navigation of an Underwater Vehicle Using Angle - Axis Rotation Representation." ISIS 2015 The 16th International Symposium on Advanced Intelligent Systems(2015): 1192-1194.
- Ko, Nak Yong, et al. "Direct drive thruster: Reduction of magnetic field distortion for navigation of an underwater robot." 2015 15th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2015.
- Lee, Hee-Jun, Hyun-Su Kim, Jong-gu Park, Tae-Yong Kuc, and Nak-Yong Ko, et al. "PLL controller for precise velocity tracking of UUV: A new ROV model and its control." 2015 15th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2015.
- Ko, Nak Yong, Seokki Jeong, and Hyun Taek Choi. "Navigation of an underwater vehicle using AHRS and depth sensor." 2015 15th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2015.
- Nak Yong Ko*, and Hyun Taek Choi, et al. "Fusing Depth Measurement for Improvement of AHRS Based Attitude Estimation of an UnderwaterVehicle." OCEANS 2015-Genova. IEEE, 2015.
Domestic Journals
- Da Bin Jeong, Nak Yong Ko*, and Gyeongsub Song, et al. "Position and Attitude Estimation of a Mobile Robot in Lie Group." 제어로봇시스템학회 논문지 26.12 (2020): 1099-1108.
- Da Bin Jeong, and Nak Yong Ko*, et al. "Improvement of SLAM Using Invariant EKF for Autonomous Vehicles." 한국전자통신학회 논문지 15.2 (2020): 237-244.
- Nak yong Ko*, Jun-Hyuk Chung, and Da-Bin Jeong. "The Implementation of Graph-based SLAM Using General Graph Optimization." 한국전자통신학회 논문지 14 (2019): 637-644.
- Gyeongsub Song, Nak Yong Ko, and Hyun-Seung Choi. "Attitude Estimation of Unmanned Vehicles Using Unscented Kalman Filter." 한국전자통신학회 논문지 14 (2019): 265-274.
- Sung-Hyeon Joo, Seon-Je Yang, Tae-Yong Kuc, Jong-Koo Park, Yong-Serk Kim, Nak-Yong Ko, Yong-Seon Moon. "Performance Comparison of Control Design for Unmanned Underwater Vehicle." Journal of Ocean Engineering and Technology 32.2 (2018): 131-137.
- Nak Yong Ko*, Gyeongsub Song, and Seokki Jeong, et al. "Bias Estimation of Magnetic Field Measurement by AHRS Using UKF." 한국해양공학회지 31.2 (2017): 177-182.
- Yeongjun Lee, Jinwoo Choi, and Nak Yong Ko, et al. "Experimental result of Real-time Sonar-based SLAM for underwater robot." 전자공학회논문지 54.3 (2017): 108-118.
- Nak Yong Ko*, and Seokki Jeong. "Fused Navigation of Unmanned Surface Vehicle and Detection of GPS Abnormality." 제어로봇시스템학회 논문지 22.9 (2016): 723-732.
- Jun Hee Han, and Nak Yong Ko. "An Optimization Approach for Localization of an Indoor Mobile Robot." 한국지능시스템학회 논문지 26.4 (2016): 253-258.
- Jun Hee Han, and Nak Yong Ko, et al. "Simulation of Sensor Measurements for Location Estimation of an Underwater Vehicle." 한국지능시스템학회 논문지 26.3 (2016): 208-217.
- Noh, Sung Woo, Nak Yong Ko*, and Tae Yong Kuc. "Localization of a Mobile Robot Using Ceiling Image with Identical Features." 한국지능시스템학회 논문지 26.2 (2016): 160-167.
- Jae Keun Song, Nak Yong Ko, and Byun Keun Song. "Development for Spot Welding Steel Band packing System." 공학기술논문지 8.1 (2015): 91-97.
Domestic Conferences
- Gyeongsub Song and Nak Yong Ko*, et al. "GNSS fault detection and diagnosis of UAV." 제어로봇시스템학회 국내학술대회 논문집 (2022): 14-15.
- Da Bin Jeong and Nak Yong Ko*, et al. "Position Tracking of an Unmanned Surface Vehicle Considering the Kinematic Model." 제어로봇시스템학회 국내학술대회 논문집 (2022): 22-23.
- Boeun Lee and Nak Yong Ko*. "Backstepping Control of Position and Attitude of USVs." 제어로봇시스템학회 국내학술대회 논문집 (2022): 20-21.
- Henok Tegegn Warku and Nak Yong Ko*. "Localization of Mobile Robot in Indoor Environment Using Adaptive Monte Carlo Localization on ROS." 제어로봇시스템학회 국내학술대회 논문집 (2022): 16-17.
- Da Bin Jeong and Nak Yong Ko*, et al. "Navigation of Underwater Robots Compensating Attitude Error between Sensor Coordinate Systems." 제어로봇시스템학회 논문집 (2022): 566-574.
- Boeun Lee, Da Bin Jeong and Nak Yong Ko, et al. "Simulation of Unmanned Surface Vehicle Motion Model and Control in ROS Environment." 한국수중·수상로봇기술연구회 춘계학술대회 (2022): 27-29.
- Da Bin Jeong and Nak Yong Ko*, et al. "Tracking of Unmanned Surface Robots Using Radar." 한국로봇종합학술대회 (2022): 563-564.
- Boeun Lee, Nak Yong Ko* and Warku Henok Tegegn. "Position and Attitude Control for USV Using PD Control." 한국로봇종합학술대회 (2022): 565-566.
- Nak Yong Ko and Da Bin Jeong, et al. "Motion Model and Measurement Model in Tracking Filters for Prediction of Potential Collision with Ships." 해양공학회 학술대회 (2021).
- Hyun-Taek Choi and Nak Yong Ko. "A motion estimation and prediction technique of marine objects considering probabilistic characteristcs." 한국해양공학회 학술대회 (2021).
- Da Bin Jeong and Nak Yong Ko*, et al. "Improved Robot Navigation through Estimation of Attitude Error between Sensor Coordinate Systmes." 제어로봇시스템학회 국내학술대회 논문집 (2021): 397-398.
- Boeun Lee and Nak Yong Ko*, et al. "Emotion Recognition Based on Voice and Facial Expressions for Positive Change of Emotions." 제어로봇시스템학회 국내학술대회 논문집 (2021): 399-400.
- Woo Sung Choi and Nak Yong Ko, et al. "Multi-Functional Brain-Computer Interface Using Convolutional Neural Networks." 제어로봇시스템학회 국내학술대회 논문집 (2021): 403-404.
- Gyeongsub Song and Nak Yong Ko*, et al. "Fault Detection to Ensure The Integrity of Unmaned Surface Vehicles." 제어로봇시스템학회 국내학술대회 논문집 (2021): 407-408.
- Henok Tegegn Warku, Nak Yong Ko*, et al. "Indoor Environment Mapping Based on ROS Using GMapping Algorithm and Lidar Sensor." 제어로봇시스템학회 국내학술대회 논문집 (2021): 401-402.
- Nayoung Jang and Nak Yong Ko, et al. "Analysis of the functional connectivity over time during sleep." 제어로봇시스템학회 국내학술대회 논문집 (2021): 571-572.
- Yejin Hwang and Nak Yong Ko, et al. "EEG Signal Analysis during Upper Limb Movement Using F-Value Time-Frequency Analysis." 제어로봇시스템학회 국내학술대회 논문집 (2021): 567-568.
- Gyeongsub Song, Da Bin Jeong, Nak Yong Ko. "Dead-reckoning with Dynamic Model of Catamaran Ship Environment." 한국수중·수상로봇기술연구회 춘계학술대회, 2021.
- Da Bin Jeong, Gyeongsub Song, Nak Yong Ko*. "Dead-reckoning of a Mobile Robot Using Lie Group Theory." 한국수중·수상로봇기술연구회 춘계학술대회, 2021.
- Gyeongsub Song, Nak Yong Ko*, Da Bin Jeong, Henok Tegegn Warku. "Fault Detection and Diagnosis of IMU for Navigation of Unmaned Surface Vehicles." 한국로봇종합학술대회, 2021.
- Da Bin Jeong, Nak Yong Ko*, Gyeongsub Song. "Robot Navigation with Estimation of Sensor Alignment Error." 한국로봇종합학술대회, 2021.
- Henok Tegegn Warku, Nak Yong Ko*, Gyeongsub Song, Da Bin Jeong. "Pose Estimation of a Mobile Robot in a Small Indoor Workspace Using Ultrasonic Beacons." 한국로봇종합학술대회, 2021.
- Boeun Lee, Nak Yong Ko*, A Hyeon Jo. "Emotion Recognition Based on Voice and Facial Expressions for Emotional Improvement." 한국로봇종합학술대회, 2021.
- Nak Yong Ko, Gyeongsub Song, and Da Bin Jeong, et al. "Estimation of Position and Attitude of Unmanned Surface Vehicle by Landmark Detection." 2020 Pohang. Proc. Korean Marine Robot Technology Society, 2020.
- Da Bin Jeong, Nak Yong Ko*, and Gyeongsub Song, et al. "Position Estimation of a Mobile Robot in 2-Dimensional Space Using ESKF." 제어로봇시스템학회 국내학술대회 논문집 (2020): 63-64.
- Sung Hyun You, and Nak Yong Ko. "A New Finite Impulse Response Filter Using Output Comparing Method with Least Square Method." 제어로봇시스템학회 국내학술대회 논문집 (2020): 71-72.
- Gyeongsub Song, Nak Yong Ko, and Da Bin Jeong, et al. "3D Error State Kalman Filter for Position and Attitude Estimation of a Vehicle." 제어로봇시스템학회 국내학술대회 논문집 (2020): 73-74.
- Gyeongsub Song, Nak Yong Ko*, and Da Bin Jeong. "Attitude Estimation Callbrating Blas of Magnetic Field Measurement." 2019 Yeosu. Proc. Korean Marine Robot Technology Society, 2019.
- Da Bin Jeong, Nak Yong Ko*, and Gyeongsub Song. "Navigation of a Remotely Operated Underwater Vehicle Using Inertial Measurement." 2019 Yeosu. Proc. Korean Marine Robot Technology Society, 2019.
- Nak Yong Ko, Da Bin Jeong, and Gyeongsub Song. "Estimation of Sensor Misalignment in Underwater Robots." 2019 Seoul. Proc. Korean Marine Robot Technology Society, 2019.
- Da Bin Jeong, Nak Yong Ko*, and Jun Hyuk Chung, et al. "Navigation of Underwater Construction Robot Fusing Multiple Sensor Measurements."2019 Seoul. Proc. Korean Marine Robot Technology Society, 2019.
- Gyeongsub Song, Nak Yong Ko*, and Da Bin Jeong, et al. "Dynamics Model of a Propeller for Small Unmanned Aerial Vehicles." 제어로봇시스템학회 국내학술대회 논문집 (2019): 63-64.
- Gyeongsub Song, and Nak Yong Ko*, et al. "Navigation of Small Unmanned Aerial Vehicles Using Dynamic Model." 제어로봇시스템학회 국내학술대회 논문집 (2019): 61-62.
- Da Bin Jeong, Nak Yong Ko*, Gyeongsub Song, and Jun Hyuk Chung. "Position and Attitude Estimation of Unmanned Submersible Using EKF." 제어로봇시스템학회 국내학술대회 논문집 (2019): 65-66.
- Gyeongsub Song, and Nak Yong Ko*. "Implementation of AUV Navigation Using Open Source Software PX4." 제어로봇시스템학회 국내학술대회 논문집 (2018): 210-211.
- Eun Jin Kim, Sun Jae Yang, Gun Gyo In, Nak Yong Ko, et al. "Scenario-based Multi Guard Robot Coverage Planning." 제어로봇시스템학회 국내학술대회 논문집 (2018): 391-392.
- 손승욱, 문용선, and 고낙용, et al. "Designing Guard Robot for 24hour and 70km Operation using Plug-in Hydrogen Fuel Energy Power System." 제어로봇시스템학회 국내학술대회 논문집 (2018): 389-390.
- Seokki Jeong, and Nak Yong Ko*, et al. "Autonomous Docking Method for Fuel Recharging of Security Robot." 제어로봇시스템학회 국내학술대회 논문집 (2018): 387-388.
- Nak Yong Ko*, and Gyeongsub Song, et al. "Estimation of Attitude and Position of an Unmanned Aerial Vehicle Using Invariant Extended Kalman Filter." 제어로봇시스템학회 국내학술대회 논문집 (2018): 26-27.
- Nak Yong Ko*, and Jun Hyuk Chung. "Implementation of SLAM in 2-Dimensional Environment Using Invariant EKF." 제어로봇시스템학회 국내학술대회 논문집 (2018): 10-11.
- 배기덕, 박지현, 엄태영, 최영호, 문용선, 고낙용, 국태용. "A Study on Path Planning and Obstacle Avoidance Technique for Safe Running of Outdoor Unmanned Security Robot." 제어로봇시스템학회 국내학술대회 논문집 (2018): 395-396.
- Seokki Jeong, Nak Yong Ko, and Gyeongsub Song, et al. "EKF Integrated Navigation of an UUV Using USBL and IMU." 한국로봇종합학술대회 논문집 (2018): 694-695.
- Nak Yong Ko, Gyeongsub Song, Won Keun Youn, and In Ho Choi. "Implementation of Invariant EKF for Attitude Estimation of Unmanned Aerial Vehicle." 한국로봇종합학술대회 논문집 (2018): 350-351.
- Nak Yong Ko, and Jun Hyuk Chug "Implementation of Graph-based SLAM Using g2o." 한국로봇종합학술대회 논문집 (2018): 340-341.
- Seungwook Son, Yong Seon Moon, Young-Pil Lee, Nak Yong Ko, and Ryu-Jae Kwan. "Multi Object tracking using PHD Filter in 3D Lidar Data Environment." 한국수중수상로봇기술연구회 추계학술대회(2017): 139-141.
- Seong Ju Lee, Yong Sun Moon, Ji Yoon Moon, Nak Yong Ko, and Seung Woo Lim. "Defect detection of underwater facility based on Deep learning and aROV™ Image Dataset." 한국수중수상로봇기술연구회 추계학술대회(2017): 96-98.
- Nak Yong Ko, Gyeongsub Song, and Seokki Jeong, et al. "USBL/IMU Integrated Navigation for an ROV." 한국수중수상로봇기술연구회 춘계학술대회(2017): 79-81.
- Seong Ju Lee, Nak Yong Ko, Yong Sun Moon, and Seok Ki Jeong, et al. "NECF-Based Attitude Estimation for an Unmanned Underwater Vehicle." 한국수중수상로봇기술연구회 춘계학술대회(2017): 79-83.
- Nak Yong Ko, and Gyeongsub Song, et al. "Attitude Estimation Using Unscented Kalman Filter and Field Measurements for Underwater Navigation." 한국수중수상로봇기술연구회 춘계학술대회(2017): 84-87.
- Nak Yong Ko, and Jun Hyuk Chung. "Attitude Estimation for Underwater Robots Using Bias-Calibrated Angular Rate." 한국수중수상로봇기술연구회 춘계학술대회(2017): 28-31.
- Joo Sung-Hyeon, Seon-Je Yang, Tae-Yong Kuc, Jong-Koo Park, and Nak Yong Ko, et al. "Comparative Study on Control Performance of Unmanned Underwater Vehicle." 한국수중수상로봇기술연구회 춘계학술대회(2017): 98-97.
- Seokki Jeong, Nak Yong Ko, and Hyun-Tae Choi, et al. "Review on Attitude Estimation Methods Using Raw Field Measurements of MEMS-AHRS." 한국수중수상로봇기술연구회 춘계학술대회(2017): 24-27.
- Sukki Jeong, Nak Yong Go*, and Jun Hyuk Chung, et al. "Attitude Estimation Using Inertial Measurement and Magnetic field." 제어로봇시스템학회 국내학술대회 논문집 (2017): 229-230.
- Tae Gyun Kim, Nak Yong Ko*, and Jun Hyuk Chung, et al. "Trajectory Estimation of an Unmanned Vehicle Using Graph-Based Method." 제어로봇시스템학회 국내학술대회 논문집 (2017): 338-339.
- Gyeongsub Song, Nak Yong Ko*, and Seokki Jeong "Unscented Kalman Filter for Attitude Estimation Using Bias Calibrated Geomagnetic Field Measurement." 제어로봇시스템학회 국내학술대회 논문집 (2017): 231-232.
- Nak Yong Ko, Seokki Jeong, and Yong Seon Moon, et al. "Attitude Estimation of an ROV for Inspection of Underwater Construction." 한국수중수상로봇기술연구회 춘계학술대회(2016): 154-156.
- Seokki Jeong, and Nak Yong Ko*, et al. "Performance Evaluation of Attitude Estimation Methods Utilizing MEMS AHRS." 제어로봇시스템학회 국내학술대회 논문집 (2016): 59-60.
- Nak Yong Ko, Seokki Jeong. "Detection and Compensation of GPS Jamming for Navigation of an Unmanned Surface Vehicle." 제어로봇시스템학회 국내학술대회 논문집 (2016): 61-62.
- Jun Hee Han, and Nak Yong Ko. "An Optimization Approach for Localization of an Indoor Mobile Robot." 한국지능시스템학회 논문지 26.4 (2016): 253-258.
- Jun Hee Han, and Nak Yong Ko, et al. "Use of EKF and UKF for Navigation of an Underwater Robot." 한국로봇종합학술대회 논문집(2016): 179-180.
- Seokki Jeong, and Nak Yong Ko. "A Filtering Method for Localization of an Outdoor Robot." 한국로봇종합학술대회 논문집(2016): 176-177.
- Seokki Jeong, and Nak Yong Ko. "A Method for Perception of Obstacles Using Lidar." 한국로봇종합학술대회 논문집(2016): 182-183.
- Seokki Jeong, Jun Hee Han, and Nak Yong Ko, et al. "Attitude Estimation of Underwater Robot Using UKF and CF." 한국로봇종합학술대회 논문집(2015): 363-365.
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