Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
Modeling and mitigation of the effect of scintillations on GPS. / Strangeways, Hal J.; Gherm, Vadim E.; Zernov, Nikolay N.
Proceedings ELMAR-2007 - 49th International Symposium ELMAR-2007 focused on Mobile Multimedia. 2007. p. 69-73 4418802.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
}
TY - GEN
T1 - Modeling and mitigation of the effect of scintillations on GPS
AU - Strangeways, Hal J.
AU - Gherm, Vadim E.
AU - Zernov, Nikolay N.
PY - 2007
Y1 - 2007
N2 - Ionospheric scintillations can not only reduce the accuracy of GPS/SBAS receiver pseudorange and carrier phase measurements but also result in a complete loss of lock on a satellite. Thus it is important to be able to investigate, model and mitigate scintillation effects. Thus, a trans ionospheric propagation model has been developed which can calculate frequency spectra (power spectra) of the phase and level (log-amplitude) fluctuations in a trans ionospheric channel of propagation containing time-varying electron density irregularities (which produce the scintillations) and which is valid even for strong scintillation conditions. The strongest amplitude scintillation occurs due to bubbles in the low latitude ionosphere. These have also been modelled and their effect on transionospheric GPS paths determined. Calculated power spectra of these processes can be used to produce random time sequences of the log-amplitude anaphase of the field. Examples of simulations and their use are presented for high and low latitudes and scintillation mitigation for GPS receivers is discussed.
AB - Ionospheric scintillations can not only reduce the accuracy of GPS/SBAS receiver pseudorange and carrier phase measurements but also result in a complete loss of lock on a satellite. Thus it is important to be able to investigate, model and mitigate scintillation effects. Thus, a trans ionospheric propagation model has been developed which can calculate frequency spectra (power spectra) of the phase and level (log-amplitude) fluctuations in a trans ionospheric channel of propagation containing time-varying electron density irregularities (which produce the scintillations) and which is valid even for strong scintillation conditions. The strongest amplitude scintillation occurs due to bubbles in the low latitude ionosphere. These have also been modelled and their effect on transionospheric GPS paths determined. Calculated power spectra of these processes can be used to produce random time sequences of the log-amplitude anaphase of the field. Examples of simulations and their use are presented for high and low latitudes and scintillation mitigation for GPS receivers is discussed.
KW - GPS
KW - Scintillation
KW - Transionospheric
UR - http://www.scopus.com/inward/record.url?scp=47349127596&partnerID=8YFLogxK
U2 - 10.1109/ELMAR.2007.4418802
DO - 10.1109/ELMAR.2007.4418802
M3 - Conference contribution
AN - SCOPUS:47349127596
SN - 9789537044053
SP - 69
EP - 73
BT - Proceedings ELMAR-2007 - 49th International Symposium ELMAR-2007 focused on Mobile Multimedia
T2 - 49th International Symposium ELMAR-2007 focused on Mobile Multimedia
Y2 - 12 September 2007 through 14 September 2007
ER -
ID: 18140040