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

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.

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.

TEC (Total Electron Content) Models

1989 ◽  
Author(s):  
Jr. Mazzella ◽  
Larson Andrew J. ◽  
Dickson Kevin P. ◽  
Peter
Keyword(s):  
Total Electron Content ◽  
Electron Content ◽  
Total Electron
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