Joint Localization and Velocity Estimation for Pulse Radar in the Nearfield Environments
Nakyung Lee, Hyunwoo Park, Daesung Park, Bukeun Byeon, Sunwoo Kim
https://doi.org/10.11003/JPNT.2023.12.3.315
In this paper, we propose an algorithm that jointly estimates the location and velocity of a near-field moving target in a pulse radar system. The proposed algorithm estimates the location and velocity corresponding to the outcome of orthogonal matching pursuit…
Test Results of Dual-Use Wide-Area Differential GPS System for Extending the Operational Coverage
Kap Jin Kim, Jae Min Ahn
https://doi.org/10.11003/JPNT.2023.12.3.307
Wide-Area Differential Global Positioning System (WADGPS) is a system that operates a number of reference stations to provide correction information to improve the accuracy of GPS users, and it is available to service users within the area where the wide-area reference…
Design of a Fully Reconfigurable Multi-Constellation and MultiFrequency GNSS Signal Generator
ByungHyun Choi, Young-Jin Song, Subin Lee, Jong-Hoon Won
https://doi.org/10.11003/JPNT.2023.12.3.295
This paper presents a multi-frequency and multi-constellation Global Navigation Satellite System (GNSS) signal generator that simulates intermediate frequency level digital signal samples for testing GNSS receivers. GNSS signal generators are ideally suited for…
A Study on Dynamic Safety Navigation Envelopes Considering a Ship’ s Position Uncertainty
Pyo-Woong Son, Youngki Kim, Tae Hyun Fang, Kiyeol Seo
https://doi.org/10.11003/JPNT.2023.12.3.289
As technologies such as cameras, Laser Imaging, Detection, and Ranging (LiDAR), and Global Navigation Satellite Systems (GNSS) become more sophisticated and common, their use in autonomous driving technologies is being explored in various fields. In the maritime area…
Trend and Analysis of Protection Level Calculation Methods for Centimeter-Level Augmentation System in Maritime
Jaeyoung Song, TaeHyeong Jeon, Gimin Kim, Sang Hyun Park, Sul Gee Park
https://doi.org/10.11003/JPNT.2023.12.3.281
The International Maritime Organization (IMO) states that the recommended horizontal accuracy for coastal and offshore areas is 10 m, the Alert Limit (AL) is 25 m, the time to alert is 10 seconds, and the integrity risk (IR) is 10-5 per three hours. For operations requiring…
Indoor Positioning Technology Integrating Pedestrian Dead Reckoning and WiFi Fingerprinting Based on EKF with Adaptive Error Covariance
Eui Yeon Cho, Jae Uk Kwon, Myeong Seok Chae, Seong Yun Cho, JaeJun Yoo, SeongHun Seo
https://doi.org/10.11003/JPNT.2023.12.3.271
Pedestrian Dead Reckoning (PDR) methods using initial sensors are being studied to provide the location information of smart device users in indoor environments where satellite signals are not available. PDR can continuously estimate the location of…
Fault Detection in Automatic Identification System Data for Vessel Location Tracking
Da Bin Jeong, Hyun-Taek Choi, Nak Yong Ko
https://doi.org/10.11003/JPNT.2023.12.3.257
This paper presents a method for detecting faults in data obtained from the Automatic Identification System (AIS) of surface vessels. The data include latitude, longitude, Speed Over Ground (SOG), and Course Over Ground (COG). We derive two methods that utilize…
Phase Jitter Analysis of Overlapped Signals for All-to-All TWSTFT Operation
Juhyun Lee, Ju-Ik Oh, Joon Hyo Rhee, Gyeong Won Choi, Young Kyu Lee, Jong Koo Lee, Sung-hoon Yang
https://doi.org/10.11003/JPNT.2023.12.3.245
Time comparison techniques are necessary for generating and keeping Coordinated Universal Time (UTC) and distributing standard time clocks. Global Navigation Satellite System (GNSS) Common View, GNSS All-in-View, Two-Way Satellite Time and Frequency Transfer (TWSTFT),…
Choice of Efficient Sampling Rate for GNSS Signal Generation Simulators
Jinseon Son, Young-Jin Song, Subin Lee, Jong-Hoon Won
https://doi.org/10.11003/JPNT.2023.12.3.237
A signal generation simulator is an economical and useful solution in Global Navigation Satellite System (GNSS) receiver design and testing. A software-defined radio approach is widely used both in receivers and simulators, and its flexible structure to…
Analysis of Jamming Robustness Performance According to RNSS Signal Waveforms
Subin Lee, Kahee Han, Jong-Hoon Won
https://doi.org/10.11003/JPNT.2023.12.3.229
As the importance and dependency of the positioning, navigation, and timing (PNT) information provided by the radio navigation satellite service (RNSS) increases, the vulnerability of RNSS to jamming can lead to significant risks. ..