2016
DOI: 10.1016/j.aej.2016.03.004
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Temporal and spatial variation of differential code biases: A case study of regional network in Egypt

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Cited by 6 publications
(4 citation statements)
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“…Due to the combined satellite and receiver biases lead to a negative TEC, several researchers have used various methods to remove automated biases of the satellites and the receiver from GPS measurements. In general, the goal for all studies is to obtain an accurate estimate of TEC [3,4].…”
Section: Introductionmentioning
confidence: 99%
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“…Due to the combined satellite and receiver biases lead to a negative TEC, several researchers have used various methods to remove automated biases of the satellites and the receiver from GPS measurements. In general, the goal for all studies is to obtain an accurate estimate of TEC [3,4].…”
Section: Introductionmentioning
confidence: 99%
“…During the local night time, multiple authors analyzed data from a single station and modeled the vertical TEC with a quadratic latitude and longitude function. In addition, Abid et al [4] has expanded the technique of attaching thin sphere shells to GPS network data sets. Also, other studies used global ionospheric total electron content and considered DCB as daily constants [13,15].…”
Section: Introductionmentioning
confidence: 99%
“…The differential code biases are a non-negligible error source. The magnitude of the combined satellite and receiver DCBs can add up to several nanoseconds (ns), for example, ignoring the satellite and receiver DCBs when computing TEC may result in an error of up to 20 TEC units (or 7 ns) for satellites and 40 TECU (or 14 ns) for receivers, one ns corresponds to approximately 28.5 cm in range units [5]. For this reason, to improve the accuracy of TEC estimates, it is necessary to precisely estimate GPS satellite and receiver DCBs.…”
Section: Introductionmentioning
confidence: 99%
“…The differential code bias (DCB) is one of the errors in calculating TEC due to complex space environments and highly dynamic orbit conditions. The accuracy can be as large as 20 TECU (7 ns) for each satellite and 40 TECU (14 ns) for the receivers when evaluating the TEC without taking into account the DCB from the satellites and receivers (Abid et al, 2016). The GPS DCB and receiver DCB can be estimated from the dual-frequency GPS observations (Sardon and Zarraoa, 1997;Arikan et al, 2008;Su et al, 2021).…”
mentioning
confidence: 99%