Prediction Method of Zenith Wet Tropospheric Delay with LSTM Model
Research Papers Soyoon Yoon1, Yongrae Kim1, Heeseob Kim2, Jeongrae Kim1† 1Department of Aeronautical and Astronautical Engineering, Korea Aerospace University, Gyeonggi-do 10540, South Korea2Satellite Application Research Team at Korea Aerospace Research Institute (KARI), Daejeon 34133, South Korea †Corresponding Author: Jeongrae Kim, E-mail: jrkim@kau.ac.kr Citation: Yoon, S., Kim, Y., Kim, H., & Kim, J. 2025, Prediction Method […]
3D Location Estimation Algorithm Based on the Combined TDOA and FDOA for Fast Moving Object
Research Papers Seul-Bi Jeon, Suk-seung Hwang† Department of Electronic Engineering, Chosun University, Gwangju 61452, Korea †Corresponding Author: Suk-seung Hwang, E-mail: hwangss@chosun.ac.kr Citation: Jeon, S.-B. & Hwang, S.-s. 2025, 3D Location Estimation Algorithm Based on the Combined TDOA and FDOA for Fast Moving Object, Journal of Positioning, Navigation, and Timing, 14, 275-280.Journal of Positioning, Navigation, and […]
Simulation of Orbit, Clock, and Ionospheric Corrections for a Regional Navigation Satellite System
Research Papers Yongrae Kim1, Heeseob Kim2, Jeongrae Kim1† 1Department of Aeronautical and Astronautical Engineering, Korea Aerospace University, Gyeonggi-do 10540, South Korea2Satellite Application Research Team at Korea Aerospace Research Institute (KARI), Daejeon 34133, South Korea †Corresponding Author: Jeongrae Kim, E-mail: jrkim@kau.ac.kr Citation: Kim, Y., Kim, H., & Kim, J. 2025, Simulation of Orbit, Clock, and Ionospheric […]
GNN-based Localization with Beam RSRP in 5G Systems
Research Papers Hasom Seo, Hongseok Jung, Duhui Yang, Sunwoo Kim† Department of Electronic Engineering, Hanyang University, Seoul 04763, South Korea †Corresponding Author: Sunwoo Kim, E-mail: remero@hanyang.ac.kr Citation: Seo, H., Jung, H., Yang, D., & Kim, S. 2025, GNN-based Localization with Beam RSRP in 5G Systems, Journal of Positioning, Navigation, and Timing, 14, 259-264.Journal of Positioning, […]
EKF-Based Orbit Determination Simulation for a Lunar Satellite Using Multi-GNSS Observables
Research Papers Sungik Kim1, Jisung Oh1, Byungwoon Park1†, Hyewon Park2, Jung-Min Joo2 1Department of Aerospace Engineering and Department of Convergence Engineering for Intelligent Drone, Sejong University, Seoul 05006, Korea2Korea Aerospace Research Institute, Daejeon 34133, Korea †Corresponding Author: Byungwoon Park, E-mail: byungwoon@sejong.ac.kr Citation: Kim, S., Oh, J., Park, B., Park, H., & Ju, J.-M. 2025, EKF-Based […]
A Constrained Optimization Framework for Camera Intrinsic Parameters Based on Camera-IMU Calibration
Research Papers Hyun-Seup Cho1†, Tae-Dong Ahn1, Sang-Chan Moon1, Kang-Hyun Hwang1, Tae-Hoon Lee1, Hyun-Wook Hong1, Juhyun Oh2, Chang-Ky Sung2 1Navigation/Weapon Data Link R&D (inertial navigation), LIG Nex1, Seongnam Gyeonggi-do 13488, Korea2The 4th R&D Institute – The 6th Directorate, Agency for Defense Development, Daejeon 34060, Korea †Corresponding Author: Hyun-Seup Cho, E-mail: hyunseup.cho@lignex1.com Citation: Cho, H.-S., Ahn, T.-D., […]
Instability Analysis of TWSTFT and GPS Time Comparison using a Double Difference Three-Cornered Hat
Research Papers Juhyun Lee, Youn-Jeong Heo, Ju-Ik Oh, Joon Hyo Rhee, Gyeong Won Choi, Jong Koo Lee, Sung-hoon Yang, Young Kyu Lee, Dai-Hyuk Yu, Myoung-Sun Heo† Time and Frequency Group, Strategic Technology Research Institute, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Korea †Corresponding Author: Myoung-Sun Heo, E-mail: hms1005@kriss.re.kr Citation: Lee, J., Heo, […]
Real-Time Estimation of GPS Satellite Clock Offsets Using a Global Tracking Network and Analysis of GPS Block-Dependent Clock Biases
Research Papers Yunhwan Seol1, Hyung-Jin Rim2, Yeong-Guk Kim1,2, Kwan-Dong Park1,2† 1Department of Geoinformatic Engineering, Inha University, Incheon 22212, Korea 2PP-Solution Inc., Seoul 08504, Korea †Corresponding Author: Kwan-Dong Park, E-mail: kdpark@inha.ac.kr Citation: Seol, Y., Rim, H.-J., Kim, Y.-G., & Park, K.-D. 2025, Real-Time Estimation of GPS Satellite Clock Offsets Using a Global Tracking Network and Analysis […]
Improved Z-Matrix Search Algorithm for Enhanced Integer Ambiguity Estimation and Fix Reliability in RTK
Research Papers Noah Minchan Kim, Dongchan Min, Jiyun Lee† Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea †Corresponding Author: Jiyun Lee, E-mail: jiyunlee@kaist.ac.kr Citation: Kim, N. M., Min, D., & Lee, J. 2025, Improved Z-Matrix Search Algorithm for Enhanced Integer Ambiguity Estimation and Fix Reliability in RTK, Journal of Positioning, […]
Improved eLoran Service Coverage Prediction Based on Field-Measurements-Corrected Simulation
Technical Papers Kiyeol Seo, Youngki Kim, Younghoon Han, Tae Hyun Fang† Ocean & Maritime Digital Technology Research Division, Korea Research Institute of Ships & Ocean Engineering (KRISO), Daejeon 34103, Republic of Korea †Corresponding Author: Tae Hyun Fang, E-mail: thfang@kriso.re.kr Citation: Seo, K., Kim, Y., Han, Y., & Fang, T.H. 2025, Improved eLoran Service Coverage Prediction […]