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Low-Cost GNSS Simulators with Wireless Clock Synchronization for Indoor Positioning
Since those errors are within the coverage of each deployed simulator, it is confirmed that the proposed system with wireless clock synchronization can effectively provide periodic position updates to users where live-sky GNSS signals are unavailable.
First Demonstration of the Korean eLoran Accuracy in a Narrow Waterway Using Improved ASF Maps
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 Record and Management Software for GPS/Loran Measurements
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
The widely used global navigation satellite systems (GNSSs) are vulnerable to radio frequency interference (RFI).
Effects of Initial Attitude Estimation Errors on Loosely Coupled Smartphone GPS/IMU Integration System
Global Positioning System (GPS) and inertial measurement unit (IMU) sensors are commonly integrated using the extended Kalman filter (EKF), for achieving better navigation performance.
