NavIC performance over the service region: availability and solution quality


Navigation with Indian Constellation (NavIC) is designed and deployed by Indian Space Research Organization (ISRO) as an indigenous, regional navigational system to provide precise PVT information over the Indian region and surrounding areas. This paper presents a detailed analysis of NavIC visibility under open sky and constrained condition over the service region using an in-house developed simulation tool, the effects of NavIC satellite geometry on single-point solution accuracy and NavIC single and dual frequency solution performances. The results show the potential of NavIC as an alternative navigation system for India and the neighbouring countries in south and south-east Asia, and over an economically important area containing major sea-routes. Even in constrained-visibility conditions, NavIC with its typical constellation design can offer seamless navigation solution over a large region of the globe; the unique S-Band NavIC signal supports enhanced accuracy for stand-alone operation. The results would be beneficial for understanding the potential of NavIC for the user community.

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  1. 1

    ISRO, Indian Regional Navigation Satellite System Signal in Space ICD for Standard Positioning Service (Version 1.1, ISRO-IRNSS-ICD-SPS-1.1), August 2017 Indian Space Research Organization

  2. 2

    The Importance of the Indian Ocean: Trade, Security and Norms, 20 May, 2019.

  3. 3

    Zaminpardaz S, Teunissen, P J and Nadarajah N 2017 IRNSS/NavIC single point positioning: a service area precision analysis. Marine Geodesy 40: 259–274

    Article  Google Scholar 

  4. 4

    Senanayake I P 2013 Anticipated prospects and civilian applications of Indian satellite navigation services in Sri Lanka. Egypt. J. Remote Sens. Space Sci. 16: 1–10

    Google Scholar 

  5. 5

    Thombre S, Zahidul M, Bhuiyan H, Söderholm S, Kirkko-Jaakkola, L R and Kuusniemi H 2014 Tracking IRNSS Satellites. Inside GNSS

  6. 6

    Dutt V, Rao G, Rani S, Babu S, Goswami R and Kumari C 2009 Investigation of GDOP for precise user position computation with all satellites in view and optimum four satellite configurations. J. Ind. Geophys. Union 13: 139–148

    Google Scholar 

  7. 7

    Rajasekhar C, Dutt V and Rao G 2016. Investigation of best satellite–receiver geometry to improve positioning accuracy using GPS and IRNSS combined constellation over Hyderabad region. Wirel. Person. Commun. 88: 385–393

    Article  Google Scholar 

  8. 8

    Sekhar C R, Dutt V S I and Rao G S 2016 GDOP estimation using simulated annealing for GPS and IRNSS combined constellation. Eng. Sci. Technol. Int. J. 19: 1881–1886

    Google Scholar 

  9. 9

    Kiran B, Raghu N, Manjunatha K N and Raghavendra Kumar M 2016 Tracking and analysis of three IRNSS satellites by using satellite tool kit. Int. J. Adv. Res. Innov. Ideas Educ. 1: 90–95

    Google Scholar 

  10. 10

    Raghu N, Kiran B and Manjunatha K N 2016 Tracking of IRNSS, GPS and hybrid satellites by using IRNSS receiver in STK simulation. In: International Conference on Communication and Signal Processing, pp. 0891–0896

  11. 11

    Priya M G and Kumar D K 2017 Position error analysis of IRNSS data using big data analytics. In: International Conference on Cognitive Computing and Information Processing, Singapore, pp. 201–209

  12. 12

    Rao V G, Lachapelle G and VijayKumar S B 2011 Analysis of IRNSS over Indian subcontinent. In: Proceedings of the 2011 International Technical Meeting of the Institute of Navigation, pp. 1150–1162

  13. 13

    Zaminpardaz S, Teunissen P J and Nadarajah N 2016 IRNSS stand-alone positioning: first results in Australia. J. Spat. Sci. 61: 5–27

    Article  Google Scholar 

  14. 14

    Nadarajah N, Khodabandeh A and Teunissen P J 2016 Assessing the IRNSS L5-signal in combination with GPS, Galileo and QZSS L5/E5a-signals for positioning and navigation. GPS Solut. 20: 289–297

    Article  Google Scholar 

  15. 15

    Odijk D, Nadarajah N, Zaminpardaz S and Teunissen P J 2017 GPS, Galileo, QZSS and IRNSS differential ISBs: estimation and application. GPS Solut. 21: 439–450

    Article  Google Scholar 

  16. 16

    Zaminpardaz S, Teunissen P J G and Nadarajah N 2017 IRNSS/NavIC and GPS: a single and dual system L5 analysis. J. Geod. 91: 915–931

    Article  Google Scholar 

  17. 17

    AGI, Systems Tool Kit (STK), 15 September 2018 from

  18. 18

    Updated TLEs 6 September 2018 from

  19. 19

    Kaplan E. D., Hegarty C. J., 2006, Understanding GPS: Principles and Applications, 2nd Edition, Norwood, MA, Artech House, Inc., pp. 48

    Google Scholar 

  20. 20

    Lachapelle G, Cannon M E, O’Keefe K and Alves P 2001 Technical benefit analysis of Galileo for Canada. Contract Report Prepared for the Canadian Space Agency, Ottawa.

    Google Scholar 

  21. 21

    Santra A, Mahato S, Mandal S, Dan S, Verma P, Banerjee P and Bose A 2019 Augmentation of GNSS utility by IRNSS/NavIC constellation over the Indian region. Adv. Space Res. 63: 2995–3008

    Article  Google Scholar 

  22. 22

    Banerjee P, Bose A and Mathur B S 1997 A study on GPS PDOP and its impact on position error. Indian J. Radio Space Phys. 26: 107–111

    Google Scholar 

  23. 23

    AUSPOS - Online GPS Processing Service, Australian Government, Geoscience Australia, 2019 from

  24. 24

    Mathworks, Support, Documentation, 2019.

  25. 25

    Santra A, Mahato S, Dan S and Bose A 2019 Precision of satellite based navigation position solution: a review using NavIC. J. Inf. Optim. Sci. 40: 1683–1691.

    Google Scholar 

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The authors thank the Space Application Center, Indian Space Research Organization (SAC/ ISRO), Ahmedabad, (Project code: NGP -28) for hardware and financial support. The authors also acknowledge the use of STK free licence and Dr. Shweta Shah, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat, India for data support.

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Correspondence to Anindya Bose.

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Dan, S., Santra, A., Mahato, S. et al. NavIC performance over the service region: availability and solution quality. Sādhanā 45, 144 (2020).

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  • NavIC
  • visibility
  • PDOP
  • accuracy
  • precision