scholarly journals On the possibilities of coordinated ionospheric soundings and GPS measurements

1994 ◽  
Vol 37 (2) ◽  
Author(s):  
L. Bányai ◽  
J. Kalmár ◽  
P. Bencze
Keyword(s):  
Boundary Value Problem ◽  
Total Electron Content ◽  
Boundary Value ◽  
Electron Content ◽  
Gps Measurements ◽  
Total Electron ◽  
Model Calculations ◽  
Preliminary Results

onospheric soundings carried out at the same site and simultaneously with GPS measurements could contribute to the better understanding of the variations of the total electron content. However, for this purpose the total electron content deduced from GPS measurements must be converted to the place of observation. A method based on an interpolation considered as boundary value problem is recommended for this conversion. Furthermore, the possibilities of the application of datapobtained by ionopheric soundiings in GPS measurements are discussed and also preliminary results of model calculations are presented.

Model calculations of the total electron content for the system of GPS satellites

2011 ◽  
Vol 51 (5) ◽  
pp. 681-687 ◽  
Author(s):  
V. A. Surotkin ◽  
V. V. Klimenko ◽  
Yu. N. Koren’kov
Keyword(s):  
Total Electron Content ◽  
Electron Content ◽  
Total Electron ◽  
Model Calculations ◽  
Gps Satellites

scholarly journals Comparison of GOLD Nighttime Measurements With Total Electron Content: Preliminary Results

2020 ◽  
Vol 125 (9) ◽  
Author(s):  
Xuguang Cai ◽  
Alan G. Burns ◽  
Wenbin Wang ◽  
Anthea Coster ◽  
Liying Qian ◽  
...  
Keyword(s):  
Total Electron Content ◽  
Electron Content ◽  
Total Electron ◽  
Preliminary Results

Variability of the Vertical Total Electron Content, from GPS data, during 2 to 8 November 2015, Using Oukaimeden and Rabat Stations in Morocco

2017 ◽  
Vol 13 (S335) ◽  
pp. 159-161
Author(s):  
Khaoula El bouyahyaoui ◽  
Aziza Bounhir ◽  
Zouhair Benkhaldoun ◽  
Rolland FLEURY ◽  
Christine Amory-Mazaudier ◽  
...  
Keyword(s):  
Solar Activity ◽  
Total Electron Content ◽  
Gps Data ◽  
Electron Content ◽  
Vertical Total Electron Content ◽  
Gps Measurements ◽  
Total Electron

AbstractIn this work we present a method for detecting the activity of the ionosphere (TEC) and we illustrate the signature of the solar activity on the vertical total electron content VTEC, during 02 to 08 November 2015, using GPS measurements obtained from two stations in Morocco, the first one in Marrakech at Observatory of Oukaimeden OUCA (31°12′23.3″ N 7°51′58.8″ W), the second in Rabat, Rabt (33.9981°N;353.1457°E, geographic).

scholarly journals Phase-referenced VLBA Observations of PSRs B1937+21 and B0329+54

1996 ◽  
Vol 160 ◽  
pp. 115-116
Author(s):  
Rachel J. Dewey ◽  
Anthony J. Beasley
Keyword(s):  
Systematic Error ◽  
Reference Frame ◽  
Total Electron Content ◽  
Electron Content ◽  
Dual Frequency ◽  
Calibration Technique ◽  
Total Electron ◽  
Preliminary Results ◽  
Frame Alignment ◽  
Gps Observations

In this paper we present the preliminary results of phase-referenced VLBA observations of two pulsars PSRB1937+21 and PSRB0329+54. Since pulsar observations usually require a lower observing frequency than that used for other astrometric applications, ionospheric delays are a significant source of systematic error. For the observations presented here we used total-electron-content (TEC) measurements derived from dual-frequency GPS observations (Wilson, Mannucci & Edwards, 1995) to calibrate ionospheric delays.Using this calibration technique were able to obtain positions for these two pulsars which we believe to be accurate to approximately 2 mas in each coordinate. With this level of accuracy we expect astrometric pulsar observations to be able to address a variety of interesting issues ranging from reference frame alignment and fundamental astrometry to the origin of pulsar velocities.

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