2018
DOI: 10.1029/2018rs006653
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Ionospheric Scintillation Fading Coefficients for the GPS L1, L2, and L5 Frequencies

Abstract: The terrestrial ionosphere over low‐latitude regions presents the unique phenomena of the equatorial ionization anomaly (characterized by global maximum in plasma concentration) and plasma‐depleted regions known as equatorial plasma bubbles and associated smaller‐scale plasma irregularities. Transionospheric radio signals such as those from Global Navigation Satellite Systems constellations, traveling across this ambient, may suffer severe scintillation in amplitude and phase due to these plasma structures. Pr… Show more

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Cited by 35 publications
(12 citation statements)
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References 18 publications
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“…These results presented in Table 3 are consistent with Moraes et al (2018b) where the E[a] values are presented for the same location besides three others in Brazilian territory and the average value for S 4 ! 0.7 is~E[a] = 2 but with significant concentration of occurrences in the region where a < 2.…”
Section: Evaluation Of the Statistical Models Performancesupporting
confidence: 90%
See 1 more Smart Citation
“…These results presented in Table 3 are consistent with Moraes et al (2018b) where the E[a] values are presented for the same location besides three others in Brazilian territory and the average value for S 4 ! 0.7 is~E[a] = 2 but with significant concentration of occurrences in the region where a < 2.…”
Section: Evaluation Of the Statistical Models Performancesupporting
confidence: 90%
“…Figure 5 plots various shapes of a-l probability density function for different values of S 4 . It worth observe that for the same S 4 value, as a increases the tail of the distribution rises, which means that the received signal will present more fading events as discussed in Moraes et al (2014Moraes et al ( , 2018aMoraes et al ( , 2018b.…”
Section: A-l Modelmentioning
confidence: 90%
“…On the other hand, Fortaleza, on the northeast coast of Brazil, detected scintillation activity until approximately 3:30 UT, which is also consistent with the map, because to the northeast at 4:00 UT there are no bubbles that could interfere with IPPs from GPS signals. Additionally, Presidente Prudente has more strength in the scintillation activity (higher values of S 4 ) than Fortaleza, which is in accordance with the analysis of Moraes, Muella, et al (2018) and Moraes, Vani, et al (2018).…”
Section: Radio Sciencesupporting
confidence: 86%
“…Even though the values of depth of fading vary from 2-30 dB at L1 C/A, C/N O value of a signal during the events of loss of lock were never found below 25 dB-Hz, which is the tracking range of the receiver in analysis. Moraes, Vani, et al (2018) have presented results where GPS L1 signal, have lower probabilities of being affected by moderate to strong scintillations compared to GPS L2C and L5 signal, which are in accordance with the inverse dependence of ionospheric scintillation intensity and carrier frequency. A fading model used by the above workers has verified the degraded performance of new L2C and L5 signals with respect to L1 signal.…”
Section: 1029/2018sw002105supporting
confidence: 75%