MP Mitigation in Urban Canyons using GPS-combined-GLONASS Weighted Vectorized Receiver

MP Mitigation in Urban Canyons using GPS-combined-GLONASS Weighted Vectorized Receiver

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
IET Signal Processing — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Multipath (MP) interference in urban canyons is one of the major sources of the positioning error. Among different methods for MP mitigation, vectorised receiver (VR) is a promising one in which channels can share their information, and as a result the stronger channels can aid the weaker or affected ones to be tracked more accurately. This study proposes a weighted VR (WVR) with the strategy of giving more weights to the observations with lower vulnerability to MP. To increase the number of immune satellites to MP, global positioning system, and global navigation satellite system integration in WVR has been discussed. The performance is also compared with conventional VR. The experimental results show that the proposed method both in a static mode under an exaggerated MP condition and in a drive through an urban canyon could find the position, respectively, with about 10 and 13% improvements.


    1. 1)
      • 1. McGraw, G.A., Young, R.S.Y., Reichenauer, K., et al: ‘GPS multipath mitigation assessment of digital beam forming antenna technology in a JPALS dual frequency smoothing architecture’. Proc. ION NTM 2004, Institute of Navigation, San Diego, 2004, pp. 561572.
    2. 2)
      • 2. Braasch, M.S.: ‘Multipath effects’. inParkinson, B.W. (ED.): ‘Global positioning system: theory and applications’, ser. Progress in astronautics and aeronautics, (American Institute of Aeronautics and Astronautics, Washington, DC, 1996).
    3. 3)
      • 3. Jiang, Z., Groves, P.D.: ‘NLOS GPS signal detection using a dual polarisation antenna’, J. GPS Solut., 2004, 18, (1), pp. 1526.
    4. 4)
      • 4. Zahidul, M., Bhuiyan, H., Lohan, E.S.: ‘Advanced multipath mitigation techniques for satellite-based positioning applications’, Int. J. Navig. Obs., 2010, 2010, (2010), pp. 115.
    5. 5)
      • 5. Wei, D., Li, Y.M.: ‘Generalized sampling expansions with multiple sampling rates for lowpass and bandpass signals in the fractional Fourier transform domain’, IEEE Trans. Signal Process., 2016, 64, (18), pp. 48614874.
    6. 6)
      • 6. Wei, D.: ‘Image super-resolution reconstruction using the high-order derivative interpolation associated with fractional filter functions’, IET Signal Process., 2016, 10, (9), pp. 10521061.
    7. 7)
      • 7. Azarbad, M.R., Mosavi, M.R.: ‘A new method to mitigate multipath error in single-frequency GPS receiver based on wavelet transform’, J. GPS Solut., 2014, 18, (2), pp. 189198.
    8. 8)
      • 8. Lau, L.: ‘Wavelet packets based denoising method for measurement domain repeat-time multipath filtering in GPS static high-precision positioning applications’, J. GPS Solut., 2016, doi: 10.1007/s10291-016-0533-1.
    9. 9)
      • 9. Mosavi, M.R., Azarbad, M.R.: ‘Multipath error mitigation based on wavelet transform in L1 GPS receivers for kinematic applications’, Int. J. Electron. Commun., 2013, 67, (10), pp. 875884.
    10. 10)
      • 10. Jiang, Z., Groves, P.D.: ‘GNSS NLOS and multipath error mitigation using advanced multi-constellation consistency checking with height aiding’. Proc. ION GNSS 2012, Nashville, TN, 2012, pp. 7988.
    11. 11)
      • 11. Groves, P.D., Jiang, Z.: ‘Height aiding, C/N0 weighting and consistency checking for GNSS NLOS and multipath mitigation in urban areas’, J. Navig., 2013, 66, (05), pp. 653669.
    12. 12)
      • 12. Sahmoudi, M., Amin, M.G.: ‘Fast iterative maximum-likelihood algorithm (FIMLA) for multipath mitigation in next generation of GNSS receivers’, IEEE Trans. Wirel. Commun., 2008, 7, (11), pp. 579584.
    13. 13)
      • 13. Hsu, L.T., Groves, P.D., Jan, S.S.: ‘Assessment of the multipath mitigation effect of vector tracking in an urban environment’. Proc. ION PNT 2013, Honolulu, Hawaii, 2013, pp. 498509.
    14. 14)
      • 14. Lashley, M.: ‘Modeling and performance analysis of GPS vector tracking algorithms’. PhD thesis, Auburn University, 2009.
    15. 15)
      • 15. Lashley, M., Bevly, D.M.: ‘Analysis of discriminator based vector tracking algorithms’. Proc. ION NTM 2007, San Diego, CA, 2007, pp. 570576.
    16. 16)
      • 16. Dardin, S.F.S., Calmettes, V., Priot, B., et al: ‘Design of an adaptive vector-tracking loop for reliable positioning in harsh environment’. Proc. ION GNSS 2013, Nashville, TN, 2013, pp. 35483559.
    17. 17)
      • 17. Lashley, M., Bevly, D.M., Hung, J.Y.: ‘Performance analysis of vector tracking algorithms for weak GPS signals in high dynamics’, IEEE J. Sel. Top. Signal Process., 2009, 3, (4), pp. 661673.
    18. 18)
      • 18. Hsu, L.T., Jan, S.S., Groves, P.D., et al: ‘Multipath mitigation and NLOS detection using vector tracking in urban environments’, J. GPS Solut., 2014, 19, (2), pp. 249262.
    19. 19)
      • 19. Borre, K., Akos, D.M., Bertelsen, N., et al: ‘A software-defined GPS and Galileo receiver: a single-frequency approach, applied and numerical harmonic analysis’ (Birkhauser, Boston, 2007).
    20. 20)
      • 20. Spilker, J.J.: ‘Fundamentals of signal tracking theory’, in Parkinson, B.W. (ED.) ‘Global positioning system: theory and applications’, ser. Progress in astronautics and aeronautics, (American Institute of Aeronautics and Astronautics, Washington, DC, 1996).
    21. 21)
      • 21. Borre, K., Strang, G.: ‘Algorithms for global positioning’ (Wellesley-Cambridge Press, Wellesley, United States, 2012).
    22. 22)
      • 22. Walter, T., Blanch, J., Choi, M.J., et al: ‘Incorporating GLONASS into aviation RAIM receivers’. Proc. ION NTM 2013, San Diego, CA, 2013, pp. 239249.

Related content

This is a required field
Please enter a valid email address