GNSS positioning and interference

No abstract yet.

Position estimation of wireless devices has many applications in short-range networks. Ultra-wideband (UWB) signals provide accurate positioning capabilities that can be harnessed in wireless systems to realise these applications. This text provides detailed coverage of UWB positioning systems, offering comprehensive…

The high time resolution of ultra-wide-band (UWB) signals facilitates very precise position estimation in many scenarios, which makes a variety applications possible. This paper reviews the problem of position estimation in UWB systems, beginning with an overview of the basic structure of UWB signals and their positio…

Dual‐frequency Global Positioning System (GPS) receivers present a plausible and cost‐effective way of computing Total Electron Content (TEC). For accurate estimates of TEC, frequency‐dependent satellite and receiver instrumental biases should be removed from GPS measurements properly. Although instrumental satellite…

• FEZA ARIKAN

A novel regularization technique which can combine signals from all Global Positioning System (GPS) satellites for a given instant and a given receiver is developed to estimate the vertical total electron content (VTEC) values for the 24‐hour period without missing any important features in the temporal domain. The al…

• FEZA ARIKAN

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• LEYLA ÇAKIR

The variability of space weather can best be captured using total electron content (TEC), which corresponds to total number of electrons on a ray path. The dual‐frequency ground based GPS receivers provide a cost‐effective means for monitoring TEC. Computation of TEC for a single GPS station is a challenge due to vari…

• FEZA ARIKAN

Total Electron Content (TEC) constitutes one of the key elements for observing the variable structure of the ionosphere. GPS provides a cost‐effective alternative in TEC estimation through earth‐based receivers. In this paper, one of the TEC estimation methods, namely Reg‐Est, is investigated in detail in terms of its…

• FEZA ARIKAN

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• HALİL ERSİN SÖKEN

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• CENGİZ HACIZADE

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• FEZA ARIKAN

The full‐wave method (FWM) of N. G. Lehtinen and U. S. Inan (2008) is used to model trans‐ionospheric propagation of VLF electromagnetic waves from ground‐based transmitters up to satellite altitudes. Direct comparison with satellite observations indicates that the VLF wave intensities measured at satellite altitudes…

• UMRAN SAVAŞ İNAN