Improved Method and Message Structure Design for TWSTFT without Extra Network
Juhyun Lee, Ju-Ik Oh, Young Kyu Lee, Sung-hoon Yang, Jong Koo Lee, Joon Hyo Rhee
https://doi.org/10.11003/JPNT.2023.12.2.201
Time comparison techniques are required for generating and keeping Coordinated Universal Time (UTC) and to distribute standard clocks. These techniques play an important role in various fields, including science, finance, military, and communication…
Corrigendum: INS/GNSS/NHC Integrated Navigation System Compensating for Lever Arm Effect between NHC Effective Point and IMU Mounting Location
PDF CONTENTS Erratum Myeong Seok Chae1, Jae Uk Kwon1, Eui Yeon Cho1, Seong Yun Cho2† 1Department of IT Engineering, Kyungil University, Gyeongsan 38428, Korea 2Department of Mechanical Automotive Engineering, Kyungil Universityk, Gyeongsan 38428, Korea CORRECTION OF THE ACKNOWLEDGEMENT In the published article, “Myeong Seok Chae, Jae Uk Kwon, Eui Yeon Cho, and Seong Yun Cho, […]
Investigation of ITU Radio Regulations Regarding KPS Service Band
Subin Lee, Kahee Han, Jong-Hoon Won
https://doi.org/10.11003/JPNT.2023.12.2.177
In order to reserve frequency bands for stable operation of the Korean Positioning System (KPS), it must be demonstrated that the impact of interference caused by KPS on other services operating in the same bands is tolerable. The International Telecommunication Union…
Performance Analysis of Real-time Orbit Determination and Prediction for Navigation Message of Regional Navigation Satellite System
Jaeuk Park, Bu-Gyeom Kim, Changdon Kee, Donguk Kim
https://doi.org/10.11003/JPNT.2023.12.2.167
This study presents the performance analysis of real-time orbit determination and prediction for navigation message generation of Regional Navigation Satellite System (RNSS). Since the accuracy of ephemeris and clock correction in navigation message affects…
Analyzing Characteristics of GPS Dual-frequency SPP Techniques by Introducing the L2C Signal
Seonghyeon Yun, Hungkyu Lee
https://doi.org/10.11003/JPNT.2023.12.2.157
Several experiments were carried out to analyze the impact of the modernized Global Positioning System (GPS) L2C signal on pseudorange-based point positioning. Three dual-frequency positioning algorithms, ionosphere-free linear combination, ionospheric error…
Single Antenna Based GPS Signal Reception Condition Classification Using Machine Learning Approaches
Sanghyun Kim, Seunghyeon Park, Jiwon Seo
https://doi.org/10.11003/JPNT.2023.12.2.149
In urban areas it can be difficult to utilize global navigation satellite systems (GNSS) due to signal reflections and blockages. It is thus crucial to detect reflected or blocked signals because they lead to significant degradation of GNSS positioning accuracy. In a previous study,…
Preliminary Analysis of Precise Point Positioning Performance Using Correction of Tropospheric Delay Gradient
Bu-Gyeom Kim, Changdon Kee
https://doi.org/10.11003/JPNT.2023.12.2.141
In this paper, impacts of tropospheric delay gradient correction on PPP positioning performance were analyzed. A correction for tropospheric delay error due to the gradient was created and applied using external data, and reference station data were collected on…
Performance Evaluation of a Compressed-State Constraint Kalman Filter for a Visual/Inertial/GNSS Navigation System
Yu Dam Lee, Taek Geun Lee, Hyung Keun Lee
https://doi.org/10.11003/JPNT.2023.12.2.129
Autonomous driving systems are likely to be operated in various complex environments. However, the well-known integrated Global Navigation Satellite System (GNSS)/Inertial Navigation System (INS), which is currently the major source for absolute position…
A Modified Klobuchar Model Reflecting Characteristics of Ionospheric Delay Error in the Korea Region
Dana Park, Young Jae Lee
https://doi.org/10.11003/JPNT.2023.12.2.121
When calculating the user’s position using satellite signals, the signals originating from the satellite pass through the ionosphere and troposphere to the user. In particular, the ionosphere delay error that occurs when passing through the ionosphere delays…
Ionospheric Model Performance of GPS, QZSS, and BeiDou on the Korean Peninsula
Serim Bak, Beomsoo Kim, Su-Kyung Kim, Sung Chun Bu, Chul Soo Lee
https://doi.org/10.11003/JPNT.2023.12.2.113
Satellite navigation systems, with the exception of the GLObal NAvigation Satellite System (GLONASS), adopt ionosphere models and provide ionospheric coefficients to single-frequency users via navigation messages to correct ionospheric delay,…