The aim of the new generation of Global Geodetic Observing System is a millimeter-level
accuracy in positioning, with a crucial role to be played by Global Navigation Satellites …

Air navigation is increasingly dependent on the use of Global Navigation Satellite Systems
(GNSS). It allows the determination of the aircraft's position in all phases of the flight and …

Abstract Single-frequency Global Navigation Satellite System (GNSS) users primarily rely on
broadcast models to adjust their observations for ionospheric delay, one of the major …

Abstract The Equatorial Ionization Anomaly (EIA) is characterized by strong ionospheric
gradients that complicate ionospheric modeling and mitigation of ionospheric impact on …

Dual-frequency multi-constellation (DFMC) satellite-based augmentation system (SBAS) is a
new SBAS standard for aeronautical navigation systems. It supports aircraft navigation from …

The ionosphere is one of the main sources of errors for the GNSS (Global Navigation
Satellite System) users in low-latitude regions. The ionosphere delays the signal …

Water vapour is highly variable over tropical region and sensitive to weather condition,
monsoon onset, green house effect, and pollution level in Ganga River. In the present study …

This paper proposes a new mathematical method of ionospheric delay estimation in single
point positioning (SPP) using a single-frequency receiver. The proposed approach focuses …

Abstract Low-Cost Positioning [Single Frequency Receivers (SFR)] using Global Positioning
Systems (GPS) can become a precise alternative to Dual Frequency Receivers (DFRs) in …

Ionospheric delay is one of the largest errors affecting Global Navigation Satellite System
(GNSS) positioning in open-sky conditions, and different methods are currently available for …