These solutions are used to calculate Protection Levels (PLs), which provide an estimated upper bound on positioning errors ... with authentic GNSS signals, the clock drift remains stable, reflecting ...

"significantly affected GNSS-dependent maritime navigation, port operations and infrastructure reliability". They observed a significant deterioration in positioning accuracy, with errors ...

GNSS signals caused by reflection and diffraction. The signals: green denotes LOS signals, red and purple denote reflected signals, and blue and yellow denote diffracted signals GA, UNITED STATES, Mar ...

leading to cumulative estimation errors over time. To address this issue, we propose a tightly-coupled Visual-Inertial-GNSS-Barometer odometry (GBVIO) based on an invariant filter. The integration of ...

Sources said that the GNSS has been put on hold as a decision was taken that ... When Vasco da Gama ventured around Africa to India in the 15th century, Europeans recognised this error: Other humans ...

Java·Applied·Geodesy·3D (JAG3D) is one of the most popular open source least-squares software package for geodetic ... distances or vertical angles in a uniform and rigorous mathematical model.

These errors, caused by signal reflection and diffraction-such as multipath effects and Non-Line-of-Sight (NLOS) reception-significantly degrade GNSS positioning accuracy. By harnessing AI ...

A pioneering study has introduced a data-driven approach to tackling site-specific unmodeled errors in Global Navigation Satellite Systems (GNSS), a persistent challenge in urban canyons and rugged ...

Researchers from Hohai University have developed a data-driven model to enhance GNSS positioning accuracy by systematically analyzing error-inducing factors and leveraging machine learning techniques, ...

In 2020, ICAO issued a letter to all member states urging them to “strengthen CNS systems resilience and mitigate interference to GNSS.” It contained 13 recommendations resulting from three different ...