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Comparison of ionospheric scintillation models with experimental data for satellite navigation applications
ionospheric scintillations scintillation models GPS SBAS
2015/9/10
A comparison between two of the most used scintillation models and experimental data is presented. The experimental
data have been derived from a GPS scintillation monitor developed at Cornell Univer...
On the relationship between the geometrical control of scintillation indices and the data detrending problems observed at high latitudes
ionospheric scintillation GPS scintillation monitors scintillation indices
2015/9/2
The experimental estimate of radio waves scintillation, caused by plasma density irregularities in the ionosphere, is usually attempted by means of scintillation indices which are essentially standard...
Ionospheric scintillation monitoring and modelling
scintillation measurement campaigns phase screen models radar wavelets maps
2015/8/28
This paper presents a review of the ionospheric scintillation monitoring and modelling by the European groups involved in COST 296. Several of these groups have organized scintillation measurement cam...
Ionospheric precursors to scintillation activity
Scintillations Forecasts Dynamics Inverse methods Algorithms and implementation
2015/8/17
Ionospheric scintillation is the rapid fluctuation of both phase and amplitude of trans-ionospheric radio waves due to small scale electron density irregularities in the ionosphere. Prediction of the ...
Ionospheric Scintillation Effects on Single and Dual Frequency GPS Positioning
Ionospheric Scintillation Effects Dual Frequency GPS Positioning
2015/6/26
The low latitude ionosphere poses a challenge to both GPS users and Satellite-Based Augmentation System(SBAS) providers. Single and dual frequency GPS receivers used in low-latitude regions can suffer...
Ionospheric Scintillation Effects on GPS Receivers during Solar Minimum and Maximum
Ionospheric Scintillation Effects GPS Receivers Solar
2015/6/25
The ionosphere has practical importance in GPS (Global Positioning System) applications because it influences transionospheric radio wave propagation. Among various phenomena in the ionosphere, ionosp...
Evaluation of Deep Signal Fading Effects Due to Ionospheric Scintillation on GPS Aviation Receivers
Deep Signal Fading Effects Due Ionospheric Scintillation GPS Aviation Receivers
2015/6/25
Deep and frequent GPS signal fading due to strong ionospheric scintillation is major concern for aircraft navigation in the equatorial region during solar maximum periods. Deep signal fading can break...
Performance of a Doppler-Aided GPS Navigation System for Aviation Applications under Ionospheric Scintillation
Performance Doppler-Aided GPS Navigation System Aviation Applications Ionospheric Scintillation
2015/6/25
Aircraft landing using the Global Positioning System (GPS) in equatorial regions is more difficult than in other regions because ionospheric scintillation is prevalent.Ionospheric scintillation causes...
Availability Benefit;Future Dual Frequency GPS Avionics;Ionospheric Scintillation
Availability Benefit Future Dual Frequency GPS Avionics Ionospheric Scintillation
2015/6/25
With the launch of the GPS-IIF satellites, the new civil navigation signals at L5 (1176.45 MHz) will become available to the GNSS community.One of the most significant benefits introduced by this new ...
Availability Benefit of Future Dual Frequency GPS Avionics under Strong Ionospheric Scintillation
Availability Benefit Future Dual Frequency GPS Avionics Ionospheric Scintillation
2015/6/25
A Global Positioning System (GPS) receiver may lose carrier tracking lock to the GPS signal under deep and frequent fades due to ionospheric scintillation. The frequent loss of lock observed during a ...
Availability Impact on GPS Aviation due to Strong Ionospheric Scintillation
Availability Impact GPS Aviation due Strong Ionospheric Scintillation
2015/6/24
Strong ionospheric scintillation due to electron density irregularities inside the ionosphere is commonly observed in the equatorial region during solar maxima. Strong amplitude scintillation causes d...
Correlation of GPS signal fades due to ionospheric scintillation for aviation applications
Ionospheric scintillation Global Positioning System (GPS) Wide Area Augmentation System (WAAS) Aviation Availability
2015/6/24
Deep and frequent Global Positioning System (GPS) signal fading due to strong ionospheric scintillation is a major concern for GPS-guided aviation in equatorial areas during high solar activity. A GPS...
Putting Isotopes to Work:Liquid Scintillation Counters,1950-1970
Isotopes to Work Liquid Scintillation Counters
2015/3/27
Putting Isotopes to Work:Liquid Scintillation Counters,1950-1970.
Investigation on the scintillation reduction of elliptical vortex beams propagating in atmospheric turbulence
Atmospheric optics Free-space optical communication
2013/7/3
We numerically investigate the scintillation index of an elliptical vortex beam in both modest turbulence and strong turbulence. Numerical simulations are realized with random phase screen sc...
Experimental investigation on the scintillation index of vortex beams propagating in simulated atmospheric turbulence
Experimental investigation scintillation index vortex beams propagating simulated atmospheric turbulence
2013/7/3
The scintillation index of vortex beam in simu-lated atmospheric turbulence is experimentally investigated.The fluctuation of the intensity can be effectively reduced by vortex beams. In particular, t...