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Graduate Exam Abstract


Yu Jiao

Ph.D. Final
July 10, 2017, 10:00 am - 12:00 pm
Engineering Building C101B
LOW-LATITUDE IONOSPHERIC SCINTILLATION SIGNAL SIMULATION, CHARACTERIZATION, AND DETECTION ON GPS SIGNALS

Abstract: Severe signal fluctuations during
ionospheric scintillation poses a threat
to GNSS signal tracking and degrades
position, navigation, and timing
solution accuracy, especially in low-
latitude regions. To understand the
behavior of ionospheric scintillation
better, this dissertation research
proposes several methods regarding
scintillation signal simulation, signal
characterization and signal detection.
The signal simulation is based on a
two-dimensional two-component
phase screen model, the output of
which will be useful for the testing of
robust tracking algorithms. The signal
characterization will be conducted in
both time and frequency domains,
laying foundation for the signal
simulation and scintillation detection.
The scintillation signal detection
system is implemented via the
support vector machine framework,
which will further validate the
effectiveness of the simulator. The
results of this research will provide a
thorough investigation of how to
detect, characterize and simulate low-
latitude scintillation signals, and will be
helpful for the scientific research of
space weather and the development
of robust GNSS receivers.


Adviser: Yu Morton
Co-Adviser: N/A
Non-ECE Member: Clayton Shonkwiler, Math Department
Member 3: Charles Rino
Addional Members: Rockey Luo

Publications:
Jiao, Y., J. Hall, and Y. Morton (2017), Performance evaluation of an automatic GPS ionospheric phase scintillation detector using a machine learning algorithm, NAVIGATION, Journal of the Institute of Navigation, doi: 10.1002/navi.188.
Jiao, Y., J. Hall, and Y. Morton (2017), Automatic equatorial GPS amplitude scintillation detection using a machine learning algorithm, IEEE Trans. Aerosp. Electron. Syst., 53(1), 405-418, doi: 10.1109/TAES.2017.2650758
Jiao, Y., D. Xu, Y. Morton, and C. Rino (2016), Equatorial scintillation amplitude fading characteristics across the GPS requency bands, NAVIGATION, Journal of the Institute of Navigation, 63(3), 267-281, doi: 10.1002/navi.146.
Jiao, Y., and Y. Morton (2015), Comparison of the effect of high-latitude and equatorial ionospheric scintillation on GPS signals during the maximum of solar cycle 24, Radio Sci., 50(9), 886-903, doi: 10.1002/2015RS005719.
Jiao, Y., Y. Morton, S. Taylor, and W. Pelgrum (2013), Characterization of high-latitude ionospheric scintillation of GPS signals, Radio Sci., 48(6), 698-708, doi: 10.1002/2013RS005259.
Jiao, Y., J. Hall, and Y. Morton (2017), Automatic GPS phase scintillation detector using a machine learning algorithm, Proc. ION ITM/PTTI, 1160-1172, Monterey, CA.
Jiao, Y., J. Hall, and Y. Morton (2016), Performance evaluation of an equatorial GPS amplitude scintillation detector using a machine learning algorithm, Proc. ION GNSS+, 195-199, Portland, OR.
Jiao, Y., D. Xu, Y. Morton, and C. Rino (2016), Equatorial amplitude scintillation spectrum analysis and fading characteristics on GPS signals, Proc. ION GNSS+, 1680-1687, Portland, OR.
Jiao, Y., Y. Morton, D. Akos, and T. Walter (2015), A comparative study of triple frequency GPS scintillation signal amplitude fading characteristics at low latitudes, Proc. ION GNSS+, 3819-3825, Tampa, FL.
Morton, Y., Y. Jiao, F. Graas, E. Vinande, and N. Pujara (2015), Analysis of receiver multi-frequency response to ionospheric scintillation in Ascension Island, Hong Kong, and Singapore, Proc. ION PNT, 10-16, Honolulu, HI.
Jiao, Y., Y. Morton, S. Taylor, and W. Pelgrum (2014), Scintillating statistics: a look at high-latitude and equatorial ionospheric disturbances of GPS signals, GPS World, 56-62.
Jiao, Y., Y. Morton, S. Taylor, and M. Carroll (2014), Characteristics of low-latitude signal fading across the GPS frequency bands, Proc. ION GNSS+, 1203-1212, Tampa, FL.
Jiao, Y., Y. Morton, and S. Taylor (2014), Comparative studies of high-latitude and equatorial ionospheric scintillation characteristics of GPS signals, Proc. IEEE/ION PLANS, 37-42, doi: 10.1109/PLANS.2014.6851355.
Jiao, Y., Y. Morton, S. Taylor, and W. Pelgrum (2013), On the correlation between ionospheric scintillation and geomagnetic field activities, Proc. ION GNSS+, 77-83, Nashville, TN
Jiao, Y., Y. Morton, S. Taylor, and W. Pelgrum (2013), High latitude ionosphere scintillation characterization, Proc. ION ITM, 579-584, San Diego, CA.


Program of Study:
ECE516
ECE581A4
ECE581A6
ECE651
ECE795
ECE799
MATH618
GSTR600