Low latitude ionospheric effects on GNSS performance: A case study of GPS positioning

• DOI: 10.1109/icetech.2016.7569291
• Publication Date: 2016-09-19T16:51:45Z
• Authors: Abhijit Dey; K. Satish Reddy; Nirvikar Dashora
• Keywords: Anomaly (physics); Sunset; GNSS augmentation

The earth ionosphere has been a topic of innovation and great discoveries for almost century. Indian low latitude is characterized by large spatial temporal variations [1]. are originated from equatorial electrodynamics that exhibits phenomena like (daytime) ionization anomaly (EIA) night-time scale plasma depletions known as bubbles [2]. Most commercial applications based upon single dual frequency GNSS uses the broadcast message correcting various errors in positioning. In this paper historical perspectives ionospheric GPS have given brief, followed an account interaction between studies its support to vice-versa. Effect on performance post sunset scintillations/TEC studied [3]. This study suggests precautionary measures direct implications method accuracy precision position using SBAS GAGAN (GPS Aided GEO Augmented Navigation) IRNSS (Indian Regional Navigation Satellite System) systems.