A Study on Effective Satellite Selection Method for Multi-Constellation GNSS
Taek Geun Lee, Yu Dam Lee, Hyung Keun Lee
https://doi.org/10.11003/JPNT.2023.12.1.11
In this paper, we propose an efficient satellite selection method for multi-constellation GNSS. The number of visible satellites has increased dramatically recently due to multi-constellation GNSS. By the increased availability, the overall GNSS performance can be …
GNSS NLOS Signal Classifier with Successive Correlation Outputs using CNN
Sangjae Cho, Jeong-Hoon Kim
https://doi.org/10.11003/JPNT.2023.12.1.1
The problem of classifying a non-line-of-sight (NLOS) signal in a multipath channel is important to improve global navigation satellite system (GNSS) positioning accuracy in urban areas. Conventional deep learning-based NLOS signal classifiers use…
Efforts against Cybersecurity Attack of Space Systems
Jin-Keun Hong
https://doi.org/10.11003/JPNT.2023.12.4.423
A space system refers to a network of sensors, ground systems, and space-craft operating in space. The security of space systems relies on information systems and networks that support the design, launch, and operation of space missions. Characteristics of space operations,…
Development and Verification of Operation Management Tool for KASS
Minhyuk Son, ByungSeok Lee
https://doi.org/10.11003/JPNT.2023.12.4.431
In order to provide continuous Korea Augmentation Satellite System (KASS) services, the operation organization should continuously and systematically perform operations, maintenance, and technical activities. All subsystems of KASS, all Line Replacement Units (LRUs),…
Accuracy Analysis of Predicted CODE GIM in the Korean Peninsula
Ei-Ju Sim, Kwan-Dong Park, Jae-Young Park, Bong-Gyu Park
https://doi.org/10.11003/JPNT.2023.12.4.423
One recent notable method for real-time elimination of ionospheric errors in geodetic applications is the Predicted Global Ionosphere Map (PGIM). This study analyzes the level of accuracy achievable when applying the PGIM provided by the Center for Orbit Determination of Europe…
Design of Trajectory Generator for Performance Evaluation of Navigation Systems
Jae Hoon Son, Sang Heon Oh, Dong-Hwan Hwang
https://doi.org/10.11003/JPNT.2023.12.4.409
In order to develop navigation systems, simulators that provide navigation sensors data are required. A trajectory generator that simulates vehicle motion is needed to generate navigation sensors data in the simulator. In this paper, a trajectory generator for evaluating…
Walking/Non-walking and Indoor/Outdoor Cognitive-based PDR/GPS/ WiFi Integrated Pedestrian Navigation for Smartphones
Eui Yeon Cho, Jae Uk Kwon, Seong Yun Cho, JaeJun Yoo, Seonghun Seo
https://doi.org/10.11003/JPNT.2023.12.4.399
In this paper, we propose a Correction Dead Reckoning (CDR) solution using correction information such as Map Matching FeedBack (MMFB) in an underground parking lot. In order to correct position errors in an underground parking lot, vehicle position and heading…
Correction-Dead Reckoning using Map Matching Information in an Underground Parking Lot
Myung Hwan Seo, Jeeseon Kim, Sojin Park, Dongkwon Suh
https://doi.org/10.11003/JPNT.2023.12.4.391
In this paper, we propose a Correction Dead Reckoning (CDR) solution using correction information such as Map Matching FeedBack (MMFB) in an underground parking lot. In order to correct position errors in an underground parking lot, vehicle position and heading…
Recommendation of Navigation Performance for K-UAM Considering Multipath Error in Urban Environment Operation
Sangdo Park, Dongwon Jung, Hyang Sig Jun
https://doi.org/10.11003/JPNT.2023.12.4.379
According to the Korea Urban Air Mobility (K-UAM) Concept of Operation (ConOps), the Global Navigation Satellite System (GNSS) is recommended as the primary navigation system and the performance specification will be implemented considering the standard of…
Navigation Performance Analysis of KASS Test Signals
Daehee Won, Eunsung Lee, Chulhee Choi
https://doi.org/10.11003/JPNT.2023.12.4.369
This paper presents the analysis results of navigation performance of Korea Augmentation Satellite System (KASS) test signals. Performance analysis was performed with Global Positioning System (GPS) and Satellite Based Augmentation System (SBAS) signals received…