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ABSTRACT
The Indian Regional Navigation Satellite System (IRNSS) is currently under development with four out of the total planned seven satellites deployed in space. The Department of Navigation and Positioning of the Finnish Geospatial Research Institute (FGI) has been an early adopter of this system in Europe through the development of its software-based multi-frequency multi-GNSS receiver, called FGI-GSRx. This paper presents the results of the first comprehensive IRNSS receiver implementation in Finland, if not in Europe, using the FGI-GSRx receiver. Following a brief description of the IRNSS system, the paper presents the receiver architecture, including the acquisition and tracking stages, and position computation. The results show that IRNSS satellites when used in multi-GNSS positioning can be beneficial in augmenting other satellite systems over north and east Europe. These benefits are expected to grow as more IRNSS satellites are deployed in space in the future. Therefore, the impact of these results is interesting to the positioning, navigation, and timing community even outside the intended service area of IRNSS.
ACKNOWLEDGEMENTS
This research has been conducted within the Detection Analysis, and Risk Management of Satellite Navigation Jamming (DETERJAM) project, funded by the Scientific Advisory Board for Defense of the Finnish Ministry of Defense and the Finnish Geospatial Research Institute, Finland, and the FINCOMPASS project, funded by the Finnish Technology Agency TEKES with the Finnish Geospatial Research Institute, Microsoft Corporation, Roger-GPS Ltd., and Vaisala Ltd.
DISCLOSURE STATEMENT
No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
Sarang Thombre
Sarang Thombre is a senior research scientist at FGI. He received his MSc and DSc (Tech) degrees from Tampere University of Technology (TUT), Finland. His research interests include innovations in GNSS receiver implementation, system design, and algorithm implementation for maritime safety and ice-aware navigation.
E-mail: [email protected]
Mohammad Zahidul Hasan Bhuiyan
Mohammad Zahidul Hasan Bhuiyan received his MSc degree and DSc (Tech) degree from TUT. He is currently working at FGI as a Specialist Research Scientist with research interests covering various aspects of GNSS receiver design and sensor fusion algorithms for seamless outdoor/indoor positioning.
E-mail: [email protected]
Stefan Söderholm
Stefan Söderholm is a researcher at FGI where he is working on improving the performance in consumer grade GNSS receivers. From 2004, he headed the Fastrax software development team, and 2008 he became vice-president of R&D in the company. He received his MSc degree from Åbo Akademi University and his Licentiate degree from University of Turku.
E-mail: [email protected]
Martti Kirkko-Jaakkola
Martti Kirkko-Jaakkola received his MSc and DSc (Tech) degrees from TUT. Currently, he is a senior research scientist at FGI, where his research interests include precise satellite positioning, low-cost MEMS sensors, and indoor positioning.
E-mail: [email protected]
Laura Ruotsalainen
Laura Ruotsalainen is a research manager and the deputy director of the Navigation and Positioning Department at FGI. She received her doctoral degree from TUT. Her current research interests cover, in addition to vision-aided navigation, GNSS interference detection and mitigation and various aspects of GNSS and sensor fusion.
E-mail: [email protected]
Heidi Kuusniemi
Heidi Kuusniemi is the director and professor at the Department of Navigation and Positioning at FGI, and an adjunct professor and lecturer in GNSS technologies at Aalto University, Finland. She received her MSc and doctor of technology degrees from TUT. Kuusniemi's research interests cover various aspects of GNSS and sensor fusion for seamless outdoor/indoor positioning.
E-mail: [email protected]