The evaluation of IRNSS/NavIC system’s performance in its primary and secondary service areas–data quality, usability and single point positioning

  • Xuying MaEmail author
  • Chengpan Tang
  • Xingyu Wang
Original Study


The Navigation with Indian Constellation (NavIC), also known as Indian regional navigation satellite system, is a regional navigation satellite system recently developed by India. Its service area covers from 30°E to 130°E and from 30°S to 50°N. In this contribution, an assessment of NavIC from aspects of data quality, usability and single point positioning (SPP) performance is carried out using real measured data collected from four sites both within NavIC’s primary and secondary service areas. Data quality of NavIC’s signal is assessed measuring its carrier-to-noise-density ratio and each satellite’s orbital period is calculated using its broadcast ephemeris. Visible satellite number and DOPs values of each site in modes of NavIC-only, GPS-only and GPS/NavIC are counted and calculated respectively. SPP solutions in modes of NavIC-only, GPS-only and GPS/NavIC are also carried out for these four sites. The results show that: the signal strength of NavIC’s L5 frequency generally equals that of GPS in site IISC (Fig. 1); mean orbital periods of IGSO and GEO satellites are 86160.70 s and 86152.03 s respectively; in site IISC (within the primary service area), currently NavIC system can provide an independent positioning service with an accuracy of less than 1 m in the east direction and less than 2 m in north and up directions respectively; the usability and SPP performance can be improved significantly in the mode of GPS/NavIC compared with those in either single mode.


IRNSS/NavIC MGEX Dilution of precision (DOP) Orbital period Performance of SPP The primary service area 



We thank Dr. Robert Odolinski for his useful revision suggestions.


  1. Agnew DC, Larson KM (2007) Finding the repeat times of the GPS constellation. GPS Solut 11(1):71–76CrossRefGoogle Scholar
  2. Cozzens T (2017) IRNSS-1H navigation satellite launch unsuccessful. GPS World. August 31, 2017.
  3. Dach R, Montenbruck O, Prange L (2014) Status of the IGS-MGEX project. In: Proceedings of EUREF 2014 symposium, Vilnius, Lithuania, pp 3–7Google Scholar
  4. Eueler HJ, Goad CC (1991) On optimal filtering of GPS dual frequency observations without using orbit information. Bull Geodesique 65(2):130–143CrossRefGoogle Scholar
  5. Han XF, Ma XY (2015) Positioning performance assessment of BeiDou satellite navigation system. Geotech Investig Surv 04:83–87Google Scholar
  6. Harde H, Shahade M R, Badnore D (2015) Indian regional navigation satellite system. Int J Res Sci Eng 1 (SP1):36–42Google Scholar
  7. ISRO (2014) IRNSS SIS ICD for standard positioning service version 1.0 configuration. ISRO, BengaluruGoogle Scholar
  8. ISRO (2015) Global Navigation Satellite System (GNSS) Meet 2015. Bangalore, October 8Google Scholar
  9. Ma X, Shen Y (2013) Beidou positioning and multipath analysis for short baselines. In: China Satellite Navigation Conference (CSNC) 2013 proceedings, Springer, Berlin, pp 447–458Google Scholar
  10. Ma X, Ma X, Tang C, Wang X (2017) The Evaluation of improvement of GPS performance combined with Quasi-Zenith satellite system in Japan Area. In: China Satellite Navigation Conference (CSNC) 2017 proceedings. Springer, Singapore, pp 525–532Google Scholar
  11. Montenbruck O, Steigenberger P, Riley S (2015) IRNSS orbit determination and broadcast ephemeris assessment. ION ITM 2015:185–193Google Scholar
  12. Nadarajah N, Khodabandeh A, Teunissen PJ (2016) Assessing the IRNSS L5-signal in combination with GPS, Galileo, and QZSS L5/E5a-signals for positioning and navigation. GPS Solut 20(2):289–297CrossRefGoogle Scholar
  13. Odijk D, Nadarajah N, Zaminpardaz S, Teunissen PJ (2017) GPS, Galileo, QZSS and IRNSS differential ISBs: estimation and application. GPS Solut 21(2):439–450CrossRefGoogle Scholar
  14. Rao VG, Lachapelle G, Vijaykumar SB (2001) Analysis of IRNSS over Indian subcontinent. In: Proceedings of the 2011 international technical meeting of the institute of navigation, pp 1150–1162Google Scholar
  15. Sharma KP, Poonia RC (2018) Review study of navigation systems for Indian Regional Navigation Satellite System (IRNSS). In: Soft computing: theories and applications. Springer, Singapore, pp 735–742Google Scholar
  16. Thoelert S, Montenbruck O, Meurer M (2014) IRNSS-1A: signal and clock characterization of the Indian regional navigation system. GPS Solut 18(1):147–152CrossRefGoogle Scholar
  17. Zaminpardaz S, Teunissen PJ, Nadarajah N (2016) IRNSS stand-alone positioning: first results in Australia. J Spatial Sci 61(1):5–27CrossRefGoogle Scholar
  18. Zaminpardaz S, Teunissen PJ, Nadarajah N (2017a) Single-frequency L5 attitude determination from IRNSS/NavIC and GPS: a single-and dual-system analysis. J Geodesy 91(12):1415–1433CrossRefGoogle Scholar
  19. Zaminpardaz S, Teunissen PJ, Nadarajah N (2017b) IRNSS/NavIC L5 attitude determination. Sensors 17(2):274CrossRefGoogle Scholar
  20. Zaminpardaz S, Teunissen PJ, Nadarajah N (2017c) IRNSS/NavIC single-point positioning: a service area precision analysis. Mar Geodesy 40(4):259–274CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó 2019

Authors and Affiliations

  1. 1.University of AucklandAucklandNew Zealand
  2. 2.Shanghai Astronomy ObservatoryChinese Academy of ScienceShanghaiChina
  3. 3.Xi’an Siyuan UniversityXi’anChina

Personalised recommendations