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COMPENSATION OF THE IONOSPHERIC EFFECTS ON SAR INTERFEROGRAM BASED ON RANGE SPLIT-SPECTRUM AND AZIMUTH OFFSET METHODS – A CASE STUDY OF YUSHU EARTHQUAKE
InSAR Ionospheric effects Range split-spectrum Azimuth offset Ionosphere correction Yushu earthquake
2018/5/14
InSAR technique can measure the surface deformation with the accuracy of centimeter-level or even millimeter and therefore has been widely used in the deformation monitoring associated with earthquake...
MONITORING IONOSPHERIC VARIATION FOR A DEFINITE PERIOD TIME IN TURKEY
Ionosphere Total Electron Content GNSS
2016/1/15
Ionosphere has been studied by a number of scientists in recent years. Since GPS observations cannot provide TEC value directly, it can be estimated from combination of observations. In this study TEC...
The influence of active meteorological systems on the ionospheric F-region
MCCs F-region virtual height electronic concentration
2015/10/8
Effects on the F region of two active meteorological systems will be analyzed. These systems are known as Mesoscale Convective Complexes (MCCs). Ionospheric data from a vertical sounder located in Tuc...
Short-term prediction of ionospheric parameters based on auto-correlation analysis
Ionospheric F region prediction auto-correlation method
2015/10/8
A prediction method based on a simple auto-regressive model has been developed for short-term prediction of ionospheric characteristics. The method determines the auto-correlation function for the hou...
Low-latitude ionospheric disturbances associated with earthquakes
Ionosphre equatorial anomaly low latitudes earthquakes
2015/9/28
Topside electron density measured on satellite board was analyzed. It was shown that before the two considered earthquakes with their epicenters located at low and equatorial latitudes the stable modi...
Could ionospheric variations be precursors of a seismic event? A short discussion
Ionosphere seismic precursors
2015/9/28
A short review of published papers on the perturbations in the ionosphere due to seismogenic effects is reported. The method to correlate different classes of phenomena as ionospheric variations and s...
On the relation between ionospheric winter anomalies and solar wind
Ionospheric winter anomalies solar wind
2015/9/28
There are two different winter anomalies. A small one that appears in connection with ionization at relatively low latitudes in the bottom of the D-region of the ionosphere. There, the electron densit...
Forecasting geomagnetic activity three hours in advance for ionospheric applications
Geomagnetic activity ionospheric disturbance ferecasting
2015/9/28
An attempt at forecasting the magnetic activity index three hours in advance is presented. This approach is based on a suitable treatment of time-weighted accumulations of the three-hourly magnetic in...
Magnetic and solar effects on ionospheric absorption at high latitude
ionospheric absorption solar protons emissions
2015/9/25
Some periods of intense solar events and of strong magnetic storms have been selected and their effects on the ionospheric D region have been investigated on the basis of ionospheric absorption data d...
Forecasting of ionospheric characteristics during quiet and disturbed conditions
Forecasting procedure quiet and disturbed conditions
2015/9/25
An autocovariance forecasting procedure for single location ionospheric characteristics is presented. Its accuracy is illustrated as a function of the amount of time extrapolation for selected Europea...
Coupling from below as a source of ionospheric variability: a review
Lower atmosphere ionospheric response waves thermosphere
2015/9/25
The purpose of this paper is to review shortly some observational backgrounds for the suggestion of a genuine link between processes in the lower atmosphere and ionospheric response. Attention is conc...
Proposals are made for Earth-space and space-space paths to apply the term ?propagation degradation probability?, analogous to ?basic circuit reliability? adopted within the Radiocommunication Sector ...
Nowcasting, forecasting and warning for ionospheric propagation: tools and methods
Nowcasting ionospheric propagation
2015/9/14
The paper reviews the work done in the course of the COST 271 Action concerned with the development of tools and methods for forecasting, nowcasting and warning of ionospheric propagation conditions. ...
Total electron content - A key parameterin propagation: measurement and usein ionospheric imaging
parameterin ionosphere
2015/9/14
The paper reports on a series of studies carried out within the COST 271 Action relating to the measurement and use of Total Electron Content (TEC) of the ionosphere over North West Europe.
Total ele...
Investigation into the problem of characterization of the HF ionospheric fluctuating channel of propagation: construction of a physically based HF channel simulator
ionosphere Hf channel simulator
2015/9/14
A wideband HF simulator has been constructed that is based on a detailed physical model. It can generate an output giving a time realization of the HF wideband channel for any HF carrier frequency and...