Abstract
The performance of navigational receivers using satellite-based navigation technology can be severely affected by the presence of time-varying electron-density fluctuations in the ionosphere which can cause amplitude and phase perturbations at the receiver resulting in loss of phase lock at the carrier tracking loop due to cycle slip and hence unavailability of the navigation services. This paper studies the effects of amplitude and phase fluctuations at high latitudes due to the irregular ionosphere and, their effects on the receiver performance by using real time raw data from the Global Positioning Systems (GPS) satellites. The paper also suggest the use of adaptive software-based receiver model or modified hardware receivers to mitigate the effects of amplitude and phase fluctuations due to irregular ionosphere.
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Acknowledgement
The authors wish to acknowledge; the EPSRC (Engineering and Physical Science Research Council) for financial support for some of this work through Grant EP/H004637/1. The first author also thanks Sukkur IBA University and HEC, Pakistan for providing the funding for this research work. The authors are also grateful to the Geospatial Institute at Nottingham University, UK for use of archived GPS data collected under linked EPSRC grants for scintillation modeling and mitigation between Newcastle, Nottingham and Bath Universities.
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Ahmed, A., Tiwari, R., Ali, S.I., Jaffer, G. (2018). The Effects of Ionospheric Irregularities on the Navigational Receivers and Its Mitigation. In: Miraz, M., Excell, P., Ware, A., Soomro, S., Ali, M. (eds) Emerging Technologies in Computing. iCETiC 2018. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 200. Springer, Cham. https://doi.org/10.1007/978-3-319-95450-9_7
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DOI: https://doi.org/10.1007/978-3-319-95450-9_7
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