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Mathematical Model Development for Navigation with Indian Constellation (NavIC) L-Band Geo Synchronous Satellite's Direct Signal and Multipath Signals

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Abstract

NavIC L-band satellite signal that travels from the satellite to the receiver undergoes mainly shadowing and multipath effects. In this research paper, NavIC satellites were observing and analyzing signal efficiency for both the direct signal and multipath signal over the Dehradun area. Two open space data series (direct signal and multipath signal) for Dehradun were obtained in this analysis by the satellite receiver. The methodology includes evaluation, testing, and analysis of data in both cases. Based on collected data, a general mathematical model has been developed, describing the signal intensity in the open space context. The both NavIC Mathematical model was validated with the experimental data. The average R2 and RMSE values developed for the direct signal mathematical model were 0.89 and 1.08% respectively which show a good prediction of NavIC C/N0 value with the developed model. For the multipath mathematical model, four cases have been evaluated. Comparing the graphical view of all four cases for C/N0 multipath signal concerning raw NavIC C/N0 multipath signal has been done to select the best mathematical model.

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Funding

This work is supported by the Space Applications Center (SAC), Indian Space Research Organization (ISRO), Ahmedabad India under NavIC—GAGAN Utilization Program.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Graphic Era Deemed to be University, Dehradun, Uttarakhand, India

    Vivek Chamoli, Rishi Prakash & Anurag Vidyarthi

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  1. Vivek Chamoli
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  2. Rishi Prakash
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  3. Anurag Vidyarthi
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Correspondence to Vivek Chamoli.

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Chamoli, V., Prakash, R. & Vidyarthi, A. Mathematical Model Development for Navigation with Indian Constellation (NavIC) L-Band Geo Synchronous Satellite's Direct Signal and Multipath Signals. Wireless Pers Commun 126, 3367–3388 (2022). https://doi.org/10.1007/s11277-022-09869-7

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