Ground Truth Generation Algorithm for Medium-Frequency R-Mode Skywave Detection

no code implementations • 1 Sep 2023 • Suhui Jeong, Pyo-Woong Son

However, MF R-Mode, which uses MF DGNSS signals for positioning, exhibits significant performance differences between daytime and nighttime due to skywave interference caused by signals reflecting off the ionosphere.

Empirical Modeling of Variance in Medium Frequency R-Mode Time-of-Arrival Measurements

no code implementations • 1 Sep 2023 • Jaewon Yu, Pyo-Woong Son

This study aims to enhance the accuracy of performance simulation for the medium frequency (MF) R-Mode system by modeling the variance of time-of-arrival (TOA) measurements based on actual data.

Preliminary Analysis of Skywave Effects on MF DGNSS R-Mode Signals During Daytime and Nighttime

no code implementations • 30 Sep 2022 • Suhui Jeong, Pyo-Woong Son

Ranging Mode (R-Mode), a terrestrial integrated navigation system, is being investigated for use in a marine environment.

First Demonstration of the Korean eLoran Accuracy in a Narrow Waterway Using Improved ASF Maps

no code implementations • 18 Sep 2021 • Woohyun Kim, Pyo-Woong Son, Sul Gee Park, Sang Hyun Park, Jiwon Seo

This letter briefly summarizes the efforts of South Korea to deploy an enhanced long-range navigation (eLoran) system, which is a terrestrial low-frequency radio navigation system that can complement GNSSs.

Development of an R-Mode Simulator Using MF DGNSS Signals

no code implementations • 21 Aug 2021 • Suhui Jeong, Pyo-Woong Son

With the development of positioning, navigation, and timing (PNT) information-based industries, PNT information is becoming increasingly important.

Enhanced Accuracy Simulator for a Future Korean Nationwide eLoran System

no code implementations • 13 Aug 2021 • Joon Hyo Rhee, Sanghyun Kim, Pyo-Woong Son, Jiwon Seo

Once its operational performance is determined to be satisfactory, South Korea plans to move to the second phase of the program, which is a nationwide eLoran system.

Development of Record and Management Software for GPS/Loran Measurements

no code implementations • 24 Sep 2020 • Woohyun Kim, Pyo-Woong Son, Joon Hyo Rhee, Jiwon Seo

The purpose of the developed software is to collect measurements from multiple Loran transmitter chains for performance analysis of navigation methods using Loran, and to organize the data based on time to make it easy to use them.

Signal Processing

Effect of Outlier Removal from Temporal ASF Corrections on Multichain Loran Positioning Accuracy

no code implementations • 24 Sep 2020 • Jongmin Park, Pyo-Woong Son, Woohyun Kim, Joon Hyo Rhee, Jiwon Seo

The widely used global navigation satellite systems (GNSSs) are vulnerable to radio frequency interference (RFI).