GLONASS-NavIC Hybrid Operation from India Towards Seamless and Improved Performance

The fully operational GLObal’naya NAvigatsionnaya Sputnikovaya Sistema (GLONASS) is used in many civilian and military applications as an alternative to Global Positioning System. However, it is observed that the GLONASS constellation regularly provides inferior satellite geometry resulting in highe...

Full description

Saved in:
Bibliographic Details
Published in:National Academy science letters 2023-06, Vol.46 (3), p.245-250
Main Authors: Mahato, Somnath, Sarkar, Shreya, Goswami, Mrinal, Kundu, Surajit, Bose, Anindya
Format: Article
Language:English
Subjects:
Dilution
Geometry
Global positioning systems
GLONASS
GPS
History of Science
Humanities and Social Sciences
Military applications
multidisciplinary
Satellite constellations
Science
Science (multidisciplinary)
Short Communication
Visibility
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The fully operational GLObal’naya NAvigatsionnaya Sputnikovaya Sistema (GLONASS) is used in many civilian and military applications as an alternative to Global Positioning System. However, it is observed that the GLONASS constellation regularly provides inferior satellite geometry resulting in higher Position Dilution of Precision (PDOP) values from various locations across the globe and fails to provide a seamless position solution in constrained visibility conditions. In such scenarios inclusion of the regional Navigation with Indian Constellation (NavIC) signals together with GLONASS can mitigate the problems and provide uninterrupted improved position solution accuracy from India. This paper presents the possible solution to the problem by including NavIC with GLONASS within the NavIC service region. Using real-time satellite data collected from eastern India in open-sky and constrained visibility environments, it is observed that the NavIC + GLONASS hybrid operation always offers good satellite geometry with PDOP values less than 3, resulting in uninterrupted position solution in satellite visibility constrained situations even up to 20–30° elevation, and improved position solution accuracy compared to GLONASS-only operation. GLONASS provides system independence while NavIC integration extends the benefits of improved satellite geometry and enhanced solution quality. The results of this study show the benefits of global–regional systems’ integrated operation for India and the surrounding regions both for defense and civilian applications.
ISSN:0250-541X
2250-1754
DOI:10.1007/s40009-023-01232-z