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Comparative evaluation of IRNSS performance with special reference to positional accuracy

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Abstract

The Indian Regional Navigation Satellite System (IRNSS) is a seven-satellite constellation developed by Indian Space Research Organization (ISRO), India. IRNSS provides two services, with the standard positioning service open for civilian use, and for authorized users (including the military) with an assured absolute positional accuracy. IRNSS is designed to cover all the parts of India and also extending beyond the Indian borders. The coverage area of IRNSS with routes of satellites means and includes area covering entire Pakistan, Afghanistan, most of China and Middle East along with Indian Ocean. IRNSS downlink signals have two bands: S1 band and L5 Band. Presently Indian users are dependent on the civil GPS signals with a positional accuracy of 5 m. IRNSS system is intended to provide an absolute position accuracy of (i) better than 10 m throughout Indian landmass (ii) better than 20 m over the Indian Ocean and (iii) approximately in a region of 1500 km around India. There are 15 ground stations across the country responsible for operating and/or monitoring the IRNSS seven satellite constellation. A comparative analysis of IRNSS and GPS navigational satellites shows that the IRNSS consists of sufficient number of satellites for regional navigation system and it can also exhibit better performance. The main parameters selected for our study are orbital characteristics, position accuracy and positional error including Circular Error Probable (CEP), Altitude variation, Geometric Dilution of Precision (GDOP) with respect to Number of Satellites (NSAT), variations in Carrier to Noise (C/N0) ratio and scintillation effect of both GPS and IRNSS satellite systems. Our analysis showed that IRNSS systems shall be used as stand-alone systems.

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References

  1. Indian Regional Navigation Satellite System Signal in Space ICD for Standard Positioning Service (Version 1.0, ISROIRNSS-ICD-SPS-1.0), Indian Space Research Organization, 2014.

  2. Rao, V.G., Analysis of IRNSS over Indian Subcontinent, ION ITM, session B5, San Diego, 24−26 January, 1–13, 2011.

    Google Scholar 

  3. Dwivedi, A., Indian Regional Navigation Satellite System–An overview, United Nations International Meeting on the Applications of Global Navigation Satellite Systems, Vienna, Austria, 2011.

    Google Scholar 

  4. Ganeshan, A.S., Rathnakara S.C., Gupta R., and Jain, A.K., Indian Regional Navigation Satellite System (IRNSS) Concept, ISRO Satellite Center Journal of Spacecraft Technology, 2005, 15(2), pp. 19–23.

    Google Scholar 

  5. Pal, S., Ganeshan, A.S., Rao, K.N.S., and Mruthyunjaya, L., Indian Regional Navigation Satellite System, 58th International Astronautical Congress, International Space Expo, Hyderabad, 2007.

    Google Scholar 

  6. Xu, G., GPS Theory, Algorithms and Application, Springer Verlag, 2007, 2nd edition.

    Google Scholar 

  7. Sandhya Reddy, B., Senthil Kumar, V., Srinivasan, V.V., and Mehta, Y., Dual band circularly polarized microstrip antenna for IRNSS reference receiver, Proceedings of IEEE MTT-S International Microwave and RF Conference (IMaRC), Hyderabad, 2015, pp. 279–282.

    Google Scholar 

  8. Chandrasekar, M.V. et al., Modernized IRNSS broadcast ephemeris parameters, Journal of Control Theory and Informatics, 2015, 5(2).

    Google Scholar 

  9. Drosos, V.C. and Malesios, C., Measuring the accuracy and precision of the Garmin GPS positioning in forested areas: A case study in Taxiarchis-Vrastama University Forest, Journal of Environmental Science and Engineering, 2012, pp. 566–576.

    Google Scholar 

  10. van Diggelen, F., GNSS Accuracy: Lies, Damn Lies, and Statistics, GPS world, 2007, pp. 26–32.

    Google Scholar 

  11. Grewal, M.S., Weill, L.R., and Andrews, A.P., Global Positioning Systems, Inertial Navigation and Integration, Wiley Publications, 2007, 2nd edition.

    Book  Google Scholar 

  12. Grewal, M.S., Weill, L.R., and Andrews, A.P., Global Positioning Systems, Inertial Navigation and Integration, Wiley Publications, 2004.

    Google Scholar 

  13. Rao, V.S. and Kumar, V.S.B., An innovative approach to overcome GPS signal masking during maneuvers in aircraft or satellite, Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 2999–3007.

    Google Scholar 

  14. Indian Regional Navigation Satellite System Navigation Software Design Document, ISRO-ISAC-IRNSSRR-0900.

  15. Rethika, T., Nirmala, S., Rathnakara, S.C., and Ganeshan, A.S., Ionospheric delay estimation during ionospheric depletion events for single frequency users of IRNSS, Innovative Systems Design and Engineering, 2015, vol. 6, no. 2.

    Google Scholar 

Download references

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Correspondence to M. P. Vasudha.

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Published in Russian in Giroskopiya i Navigatsiya, 2016, No. 4, pp. 59–72.

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Vasudha, M.P., Raju, G. Comparative evaluation of IRNSS performance with special reference to positional accuracy. Gyroscopy Navig. 8, 136–149 (2017). https://doi.org/10.1134/S2075108717020109

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Keywords

Navigation