Ionospheric irregularities
Investigation of the relationship between the spatial gradient of total electron content (TEC) between two nearby stations and the occurrence of ionospheric irregularities
... and ionospheric scintilla- tion over different sectors (Mendillo et ...the ionospheric gradient, Ravi Chandra et ...of ionospheric irregular- ities and plasma bubbles over equatorial–low-latitude ...
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Observations of field aligned ionospheric irregularities during quiet and disturbed conditions with EKB radar: first results
... scale ionospheric irregularities. These irregularities are elongated with the Earth magnetic field and located at E- and F-layer heights of the ...these irregularities allows us to investigate ...
13
High latitude ionospheric irregularities: differences between ground and space based GPS measurements during the 2015 St Patrick’s Day storm
... the ionospheric irregu- larities registered above a LEO from that on the ...of ionospheric irregularities detected by the ground-based permanent GPS network with that of the topside GPS measurements ...
13
New advantages of the combined GPS and GLONASS observations for high latitude ionospheric irregularities monitoring: case study of June 2015 geomagnetic storm
... The ionospheric irregularities occured during the June 2015 geomagnetic storm and depicted by the combined GPS and GLONASS observations have impact on the navigation system ...strong ionospheric ...
14
Lower ionospheric irregularities
... In the previous chapter most of the experi mental limitations of measuring changes in phase path were analysed and shown to be small. However no consideration has yet been given to the effects on the phase records of ...
193
Spectral characteristics of scintillations producing ionospheric irregularities in the Indian region
... Amplitude scintillation on 250 MHz signal from geo- stationary satellite FLEETSAT have been regularly moni- tored at a number of stations extending from magnetic equa- tor to about 30 ◦ N dip in the Indian zone for the ...
13
Simultaneous 6300 Å airglow and radar observations of ionospheric irregularities and dynamics at the geomagnetic equator
... Abstract. In March 2014 an all-sky imager (ASI) was installed at the Jicamarca Radio Observatory (11.95 ◦ S, 76.87 ◦ W; 0.3 ◦ S MLAT). We present results of equatorial spread F (ESF) characteristics observed at Jicamarca ...
15
Correlation between the global occurrences of ionospheric irregularities and deep atmospheric convective clouds in the intertropical convergence zone (ITCZ)
... density irregularities and the m/l distributions of OLR observations in the ITCZ as the proxy of gravity wave occurrences at seven longitude sectors indicate that good correlations between the ...
8
Ionospheric anomalies detected by ionosonde and possibly related to crustal earthquakes in Greece
... the ionospheric behaviour is principally modu- lated by the level of solar and geomagnetic activity (Cander, ...The ionospheric parameters are variable and affected from above (solar extreme ultraviolet, ...
11
Review of the Accomplishments of Mid latitude Super Dual Auroral Radar Network (SuperDARN) HF Radars
... SuperDARN radars observe scatter from a variety of sources, including ionospheric.. irregularities, the ground / sea surface, meteor ionization trails, and possibly ice crystals in the.[r] ...
227
Performance of Network Based RTK GPS in Low Latitude Region: A Case Study in Thailand
... that ionospheric activity is much higher in a low-latitude region than in a mid-latitude region ...of ionospheric activity in Thailand region and confirmed that ionospheric irregularities ...
10
Statistical Characteristics of New Type Internal Wave in the Ionospheric F Region
... the irregularities in a randomly inhomogeneous magnetized plasma depends on the particular ...of ionospheric refractive index fluctuations can lead to an understanding of the physical processes that ...
8
On developing a new ionospheric plasma index for Brazilian equatorial F region irregularities
... These irregularities are manifestations of space weather in the iono- sphere’s environment without necessarily requiring a solar ...these ionospheric irregularities in the Brazilian ...new ...
12
The Land Based Positional Accuracy Of Gps And Gps Augmented By Gagan Over The Indian Geographical Region
... The GPS Aided and GEO Augmented Navigation (GAGAN) satellite with PRN number 127 and 128 was developed and operated by ISRO along with the Airport Authority of India [15]. The GAGAN will help to increase the positional ...
7
Ionospheric research in Germany prior to Karl Rawer
... A necessary prerequisite of any ionospheric research was the unification of electricity and magnetism by James Clerk Maxwell (1873). Since electromagnetic waves played a fun- damental role in this research their ...
6
The role of COST Actions in unifying the European ionospheric community in the transition between the two millennia
... terrestrial ionospheric research, with applications in modern communication and navigation ...new ionospheric studies were initiated, leading to the development of a number of models, algorithms for ...
13
Estimation Of Gps Receiver Dcb’s By Using Gagan Observations
... [10] 10. Revathi, R., et al. "Observation of ionospheric disturbances for earthquakes (M> 4) occurred during June 2013 to July 2014 in Indonesia using wavelets." Remote Sensing of the Atmosphere, ...
5
The Interaction Between Railway Vehicle Dynamics And Track Lateral Alignment
... track irregularities contain random characteristics, therefore, fractal analysis can be used to characterise track geometry data and provide unique numerical values that can quantify geometry signatures ...
219
Statistical evaluation of irregularities. Agricultural, structural and cohesion funds, own resources and pre-accession funds. Year 2006. Annex to the fight against fraud annual report 2006. Commission staff working document. SEC (2007) 938 final, 6 July 2007
... of irregularities reported decreased by around 10% as compared to the year ...the irregularities reaching EUR 703 million (including the Cohesion ...of irregularities communicated is concerned, it ...
104
Mixed mode GPS deformation monitoring A cost effective and accurate alternative?
... extreme ionospheric conditions, such as those experienced in close proximity to the geomagnetic equator during solar cycle maximum periods, can reduce the efficiency of the proposed ...distributing ...
5