Jeonghyeon Yun (윤정현)

Phone Number : +82) 10-7526-1415

Additional Email : alzkdpf929@outlook.kr

Linkedin : https://www.linkedin.com/in/jeyu1232/

Github : https://github.com/jeonghyeon929

Research Interest : Aerospace Engineering, Android, Electronics, Global Navigation Satellite System (GNSS), Inertial Navigation System (INS), Integrated Navigation system, Intelligent Drone

PERSONAL PROFILE

Experienced navigation systems researcher with over 8+ years dedicated to advancing navigation technology. Specialized in precise GPS/GNSS positioning, Sensor-Fusion and Dead-Reckoning (DR). Led extensive research to enhance accuracy in low-cost GNSS devices and Android smart devices. 3 years of experience participating in the 'Smartphone Decimeter Challenge' hosted by the Institute of Navigation and Google. Third place in the last competition and proven expertise and success in the global satellite navigation research community.

EDUCATION

Ph.D. Double Major in Aerospace Engineering and Convergence Engineering for Intelligent Drone, Sejong Univ.

Mar. 2021 – Feb. 2025

M.S. Double Major in Aerospace Engineering and Convergence Engineering for Intelligent Drone, Sejong Univ.

Sep. 2019 – Feb. 2021

B.S. Double Major in Aerospace Engineering and Electronics Engineering, Sejong Univ.

Mar. 2014 – Aug. 2019

CAREER

Staff Engineer, System LSI, Samsung Electronics

Mar. 2026 – Present
- Major Topic : GNSS Measurement/Positioning Engines for Mobile/Automotive SOCs (Exynos)

Post-doctoral Researcher, Navigation System Laboratory, Sejong Univ.

Mar. 2025 – Feb. 2026
- Major Topic : Android, GNSS/INS, Sensor-Fusion

Visiting Researcher, Radio Frequency & Satellite Navigation Laboratory, Univ. of Colorado Boulder

Jul. 2022 – Feb. 2023
- Major Topic : Software Defined Receiver (SDR), RF Signal Processing

SCI(E)

2024-02. A GNSS/Barometric Altimeter Tightly-coupled Integration for Three-Dimensional Semi-indoor Mapping with Android Smartphones, IEEE Geoscience and Remote Sensing Letters, https://doi.org/10.1109/LGRS.2024.3365610.
2022-12. Inherent Limitations of Smartphone GNSS Positioning and Effective Methods to Increase the Accuracy Utilizing Dual-Frequency Measurements, Sensors, https://doi.org/10.3390/s22249879.

KCI

2022-09. Vehicle Reference Dynamics Estimation by Speed and Heading Information Sensed from a Distant Point, Journal of Positioning, Navigation, and Timing, https://doi.org/10.11003/JPNT.2022.11.3.209.
2022-04. Methodology of Correcting Barometer Using Moving Drone and RTK Receiver, Journal of Advanced Navigation Technology, https://doi.org/10.12673/jant.2022.26.2.63.

PRESENTATION

2026-01. Enhancement of Smartphone Positioning for Urban Canyons: A Consensus-Based Recovery Vector Algorithm with GNSS Visibility Maps, Proceedings of the 2026 International Technical Meeting of The Institute of Navigation.
2025-11. Enhancement of Smartphone Positioning Accuracy in Urban Areas using Recurrence Vectors and Probabilistic Visibility Map Selection, Proceedings of the 2025 IPNT Conference.
2025-11. Outlier Detection Using Graph-Based RANSAC in Urban Environments, Proceedings of the 2025 IPNT Conference.
2025-11. A Study on Improving the Position Accuracy of Fitness App Users Using Smart Wearable Devices, Proceedings of the 2025 IPNT Conference.
2025-10. Multipath Error Estimation Technique for Urban Smartphone GNSS using Multiple Reference Satellites and Recurrence Vectors, Proceedings of the 2025 KONI Conference.
2025-10. User Performance Analysis of Domestic GNSS Correction Services and the Need for a Real-Time Monitoring Network, Proceedings of the 2025 KONI Conference.
2025-10. Epicenter estimation using cross-correlation of ROT between GNSS station, Proceedings of the 2025 KONI Conference.
2025-10. Trajectory and Performance Evaluation of Fitness Applications across Manufacturers of Smart Wearable Devices, Proceedings of the 2025 KONI Conference.
2025-09. Error Ellipse-Based Outlier Detection for GNSS Doppler Measurements in Urban Environments, Proceedings of the 38th of The Institute of Navigation (ION GNSS+ 2025).
2025-09. Design of Adaptive Complementary Filter for Three-Dimensional Attitude Estimation of an Android Smartphone, Proceedings of the 38th of The Institute of Navigation (ION GNSS+ 2025).
2025-02. A Study on Anomaly Detection and Performance Analysis of GNSS Doppler Measurements Using Density-Based Data Clustering, Proceedings of the 2025 KICS Winter Conference.
2024-11. A Two-step Accurate Velocity Estimation Method for Improved Smartphone Position Accuracy, Proceedings of the 2024 IPNT Conference.
2024-09. Third Place Winner of the Smartphone Decimeter Challenge: Improving Smartphone Accuracy with a Two-step Accurate Velocity Estimation, Proceedings of the 37th of The Institute of Navigation (ION GNSS+ 2024).
2024-09. Enhanced Smartphone Positioning in Urban Environments: GNSS Fault Detection and Mitigation through Integrated Navigation System, Proceedings of the 37th of The Institute of Navigation (ION GNSS+ 2024).
2024-06. LNSS Future Space Navigation System Component Design and Simulation Results, Proceedings of the KSAS 2024 Space Conference.
2024-04. Approach to Enhancing Urban Positioning based on Smartphone GNSS-VPS Integration, Proceedings of the ION 2024 Pacific PNT Meeting.
2024-02. A Study on the Integration of GNSS and VPS for Improving Positioning Accuracy in Urban Area on the Android Smartphone Platform, Proceedings of the 2024 KICS Winter Conference.
2023-11. Co-Seismic Ionospheric Irregularity Detection and Epicenter Estimation Using Inter-Station Cross Correlation of ROT, Proceedings of the 2023 IPNT Conference.
2023-11. Enhancing Urban Positioning Accuracy Based on Smartphone-Based GNSS-INS and VPS Fusion, Proceedings of the 2023 IPNT Conference.
2023-11. Sensor Fusion Technology of Mobile Devices to Improve Positioning Accuracy and Availability, Proceedings of the 2023 IPNT Conference.
2023-11. Android Smartphone Positioning Technology: Generating and Utilizing Raw GNSS Measurements, Tutorial Session, Proceedings of the 2023 IPNT Conference.
2023-10. Android Smartphone RINEX Converter for Application of Online Post-processing Program, Proceedings of the 2023 KONI Conference.
2023-09. Ionospheric Irregularities Signature Correlation on ROT Variation for Earthquake Detection and Epicenter Estimation: Case Study of the Tohoku (2011) & Türkiye-Syria Earthquakes, Proceedings of the 36th of The Institute of Navigation (ION GNSS+ 2023), https://doi.org/10.33012/2023.19405.
2023-09. Android GNSS/INS using Complementary Filter, Proceedings of the 36th of The Institute of Navigation (ION GNSS+ 2023), https://doi.org/10.33012/2023.19272.
2023-09. Elevating Android GNSS Raw Measurement Processing: A Universal RINEX Converter for Precise Post-Processing Solutions, Proceedings of the 36th of The Institute of Navigation (ION GNSS+ 2023).
2023-06. An Introduction to Future Space Navigation System for LNSS and Its Key Technologies, Proceedings of the KSAS 2023 Space Conference.
2023-04. Toolbox for Converting Raw GNSS Measurements from the Smartphone to Apply Post-Processing Software, Proceedings of the KSAS 2023 Spring Conference.
2022-11. Methodology of Correcting Barometer Using Dynamic RTK Drone, Proceedings of the KSAS 2022 Fall Conference.
2022-11. Satellite Single Difference Based Monitoring Method for Improving Android Smartphone Position Reliability, Proceedings of the 2022 IPNT Conference.
2022-11. Estimation of Scale Factor between Vehicle OBD Velocity and Actual Velocity using Kalman Filter, Proceedings of the 2022 IPNT Conference.
2022-09. GNSS Fault Detection and Mitigation using Android IMU, Proceedings of the 35th of The Institute of Navigation (ION GNSS+ 2022), https://doi.org/10.33012/2022.18475.
2022-09. Practical Approaches to Real-time Position Accuracy Improvement of Android Smartphone Dual-frequency GNSS, Proceedings of the 35th of The Institute of Navigation (ION GNSS+ 2022), https://doi.org/10.33012/2022.18373.
2021-11. 3-D Positioning of Indoor Rescuee Using GNSS Corrections from Real-Time Moving Drone and a Barometer, Proceedings of the 2021 IPNT Conference.
2021-11. Dynamic Positioning Performance Assessment of Android Smartphone under Various Signal Reception Environments, Proceedings of the 2021 IPNT Conference.
2021-10. Comparison of Altitude Calculation Methodology Using Barometer, Proceedings of the 2021 KONI Conference.
2021-10. Satellites Single-difference based Android Smart Device Measurements Outlier Monitoring, Proceedings of the 2021 KONI Conference.
2021-09. A Technique for Finding Indoor Rescuer using GNSS and Barometer Sensors on Android Smartphones in Building Disaster Situations, Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021), https://doi.org/10.33012/2021.18007.
2020-11. Estimation of Multipath in Urban Area Using Machine Learning Technique, Proceedings of the 2020 IPNT Conference.
2020-11. Study on the Deployment of Precise PNT Reference Stations for Optimizing User Position Performance, Proceedings of the 2020 IPNT Conference.
2020-11. Cycle Slip Detection to Provide Stable Precision Positioning under High Ionospheric Activities, Proceedings of the 2020 IPNT Conference.
2020-11. Android Cloud System for ROT-based Ionospheric Irregularity Monitoring, Proceedings of the 2020 IPNT Conference.
2020-11. Practical Technique for Android Smart Device Position Accuracy Improvement, Proceedings of the 2020 IPNT Conference.
2020-10. Relative Positioning Algorithm between Drone and Smartphone in A Disaster Situation, Proceedings of the 2020 KONI Conference.
2020-10. Integrated GNSS and Barometer Positioning in Poor GNSS Environments, Proceedings of the 2020 KONI Conference.
2020-09. Detecting Ionospheric Irregularity based on ROT variation using Android Devices Cloud System, Proceedings of the 33rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2020), https://doi.org/10.33012/2020.17624.
2019-11. Position Estimation of Mobile Landing Target Based on a Single RTK Receiver, Proceedings of the 2019 KONI Conference.
2019-11. Suggestion on Cycle Slip Detection and Positioning Using Wide-lane Linear Combination, Proceedings of the 2019 KONI Conference.
2019-11. Method for Detecting Ionospheric Scintillation based on ROT (Rate of TEC) using Android Smartphone, Proceedings of the 2019 KONI Conference.
2019-10. Triple Frequency GNSS Cycle Slip Detection Algorithm during High Ionospheric Activities, Proceedings of the ISGNSS 2019 in conjunction with IPNT Conference.
2019-10. Switching Algorithm in Deep Urban Area Using DGNSS/RTK Technique and Multi-GNSS Carrier Phase Variation, Proceedings of the ISGNSS 2019 in conjunction with IPNT Conference.
2019-10. Performance Comparison of L1 and L5 GNSS Measurements using Android Smartphone, Proceedings of the ISGNSS 2019 in conjunction with IPNT Conference.

PATENT

2023-02. Method and Apparatus for Integrated Positioning using GNSS and Altitude Information (10-2499449), https://doi.org/10.8080/1020200184572.
2022-02. Global Positioning System and Method for Improving Relative Position Accuracy of GNSS and Barometer (10-2365291), https://doi.org/10.8080/1020210064127.
2021-03. Apparatus and Method for Generating GNSS Correction for Each Frequency (10-2231874), https://doi.org/10.8080/1020200163914.
2020-03. Apparatus and Method for GNSS Receiver Networking to Estimate the Width of Traveling Ionospheric Disturbance (10-2096870), http://doi.org/10.8080/1020190149872.
2020-03. Apparatus and Method for GNSS Receiver Networking to Detect and Estimate the Velocity of Traveling Ionospheric Disturbance (10-2096869), https://doi.org/10.8080/1020190149681.

SOFTWARE

2021-11. GPS Pseudo-Range Correction (PRC) Generation Module (C-2021-050501).
2021-11. Android GNSS Raw Measurement Processing Module (C-2021-049580).
2020-12. ROT Data Acquisition and Transmission Application for Android Smart Devices (C-2020-046907).
2020-12. ROT Data Collection and Analysis Server for Android Smart Devices (C-2020-046906).

AWARD

2025-10. [Best Paper Award], Epicenter estimation using cross-correlation of ROT between GNSS station, Proceedings of the 2025 KONI Conference.
2024-09. [Third Place Winner], Improving Smartphone Accuracy with a Two-Step Accurate Velocity Estimation, Smartphone Decimeter Challenge of the 37th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2024).
2024-09. [Best Presentation Award], Improving Smartphone Accuracy with a Two-Step Accurate Velocity Estimation, Proceedings of the 37th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2024).
2023-10. [Best Paper Award], Android Smartphone RINEX Converter for Application of Online Post-processing Program, Proceedings of the 2023 KONI Conference.
2022-11. [Best Paper Award], Estimation of Scale Factor between Vehicle OBD Velocity and Actual Velocity using Kalman Filter, Proceedings of the 2022 IPNT Conference.
2022-07. [Gold Medal], Google Smartphone Decimeter Challenge 2022 sponsored by Google, the Institute of Navigation's Satellite Division, and Kaggle.
2020-10. [Best Paper Award], Integrated GNSS and Barometer Positioning in Poor GNSS Environments, Proceedings of the 2020 KONI Conference.
2020-09. [Best Presentation Award], Detecting Ionospheric Irregularity Based on ROT Variation Using Android Devices Cloud System, Proceedings of the 33rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2020).
2019-11. [Best Paper Award], Suggestion on Cycle Slip Detection and Positioning Using Wide-lane Linear Combination, Proceedings of the 2019 KONI Conference.

Skill

Android Developers (Android Studio, Android GNSS Logger).
Computer Programming (Java, Python, Matlab).

Photo

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