Effects of Solar Radio Emission and Ionospheric Irregularities on GPS/GLONASS Performance

Demyanov, V. V.; Yasyukevich, Yury; Jin, Shuanggen

doi:10.5772/54568

Cited by 4 publications

(9 citation statements)

References 42 publications

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“…One of the observable effects of dynamical phenomena in the near-Earth space plasmas are scintillations of transionospheric radio signals. Scientific literature includes a number of studies addressing the stability of the GNSS operation and the accuracy of positioning under disturbed ionospheric conditions 5,[10][11][12][13][14] . Scattering of the signal on small-scale plasma density inhomogeneities can lead to strong scintillations of the amplitude and phase of the transionospheric radio signals 15,16 .…”

Section: The Influence Of An Auroral Substorm On the Total Electron Cmentioning

confidence: 99%

“…TEC measurements are often used to study the ionospheric response to geophysical events 10,13 , noting that the regular variability of the ionosphere (i.e., quiet-time ionosphere) is typically less than 1 TECU/min 16,23,24 . However, in the ionospheric research, the inverse problem is also encountered, which is the study of the impact of the ionosphere on the properties of trans-ionospheric radio signals.…”

Section: Gps Tec Jumpsmentioning

confidence: 99%

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Relationship between TEC jumps and auroral substorm in the high-latitude ionosphere

Чернышов

Miloch

Jin

et al. 2020

Sci Rep

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The influence of an auroral substorm on the total electron content (TEC) jumps and cycle slips on Global Positioning System (GPS) at high-latitudes is studied. For the first time, optical data from the all-sky imager, as well as interplanetary magnetic field and magnetometer data are used to complete the analysis of the slips occurrence and to monitor the substorm evolution. Two types of slips are considered: (i) instrumental slips including losses in the measured phase of the GPS signal and (ii) sharp TEC variations (TEC jumps) It is demonstrated that the jumps in TEC determined from the GPS signals are mainly related to the auroral particle precipitation that normally occurs during geomagnetic substorms in the polar ionosphere. The GPS frequency $${L}_{2}$$L2 is consistently subject to more slips than frequency $${L}_{1}$$L1 both for quiet and disturbed conditions. The probability of TEC jumps is higher than for cycle slips in phase at frequencies $${L}_{1}$$L1 and $${L}_{2}$$L2. The maximum of TEC jumps is observed during the recovery phase of the auroral substorm. Our findings are based on a data set obtained for a particular event. A generalization of the obtained numerical estimates to other events requires additional research and further analysis.

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Section: The Influence Of An Auroral Substorm On the Total Electron Cmentioning

confidence: 99%

Section: Gps Tec Jumpsmentioning

confidence: 99%

Relationship between TEC jumps and auroral substorm in the high-latitude ionosphere

Чернышов

Miloch

Jin

et al. 2020

Sci Rep

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“…Currently, GPS uses a military only P(Y) code on L2, which is unavailable to civilian users. In order to decode it, a squaring of L1 and L2 signals is used, which leads to 6 dB loss and L2 acquisition dependent on L1 acquisition (Vladislav et al, 2013). This can be observed in Figure 14 where all of the L1 and L2 SNR patterns look very similar and the loss of lock and reacquisition occurs at the same time, despite the GPS L2 band being 300 MHz lower than the frequency band of the jammer.…”

Section: O E Ys T E Imentioning

confidence: 82%

“…This could be due to the narrower front-end pass band of the GLONASS receiver (Vladislav et al, 2013). A combination of both systems demonstrated better positional accuracy and jamming resilience.…”

Section: O E Ys T E Imentioning

confidence: 99%

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GNSS Jamming Resilience for Close to Shore Navigation in the Northern Sea

Glomsvoll

Bonenberg

2016

J. Navigation

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Navigational error accounts for half of the accidents and serious incidents in close to shore maritime transport in Norway predominantly due to the rapidly changing weather conditions and the dangerous nature of the narrow inshore waters found along the Norwegian coast. This creates a dependence on Differential Global Positioning System (DGPS) use and any disruption to this service can lead to an increased accident rate. The aim of this paper is to research the jamming vulnerability of existing maritime receivers and to understand if an upgrade to a multi-constellation or multi-frequency receiver would improve system resilience. The novelty of this work is a comparison of jamming resilience between different combinations of multiple constellations (GPS and Globalnaya Navigatsionnaya Sputnikovaya Sistema (GLONASS)) and multi-frequency Global Navigation Satellite System (GNSS) signals. This paper presents results from GNSS jamming trials conducted in the northern part of Norway, confirming previous research and indicating that typical maritime GPS receivers are easy to jam and may produce erroneous positional information. Results demonstrate that the single frequency multi-constellation receivers offer better jamming resilience than multi-frequency (L1 + L2) GPS receivers. Further, the GLONASS constellation demonstrated a better resilience than GPS. Results demonstrate a known correlation between GPS L1 and L2 frequencies, as well as a probable over-dependence on GPS for signal acquisition, meaning that no signal can be received without GPS L1 present. With these limitations in mind, the authors suggest that the most economic update to the single frequency GPS receivers, currently used for maritime applications, should be multi-constellation GPS + GLONASS receivers. This solution is cheaper and it also offer better jamming resistance for close to shore navigation than dual frequency receivers. K E Y

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Influence of the Ionosphere on the Parameters of the GPS Navigation Signals during a Geomagnetic Substorm

et al. 2020

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Effects of Solar Radio Emission and Ionospheric Irregularities on GPS/GLONASS Performance

Cited by 4 publications

References 42 publications

Relationship between TEC jumps and auroral substorm in the high-latitude ionosphere

Relationship between TEC jumps and auroral substorm in the high-latitude ionosphere

GNSS Jamming Resilience for Close to Shore Navigation in the Northern Sea

Influence of the Ionosphere on the Parameters of the GPS Navigation Signals during a Geomagnetic Substorm

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