HR: 08:00h
AN: G51D-01 INVITED    [Abstracts]
TI: GPS for estimation of TEC, electron density, velocity and scintillation in the ionosphere
AU: * Mitchell, C
EM: eescnm@bath.ac.uk
AF: University of Bath, BATH, BATH, BA2 7AY, United Kingdom
AU: Spencer, P
EM: ps255@bath.ac.uk
AF: University of Bath, BATH, BATH, BA2 7AY, United Kingdom
AU: Yin, P
EM: eexpy@bath.ac.uk
AF: University of Bath, BATH, BATH, BA2 7AY, United Kingdom
AU: Pokhotelov, D
EM: D.pokhotelov@bath.ac.uk
AF: University of Bath, BATH, BATH, BA2 7AY, United Kingdom
AU: Smith, A
EM: eepas@bath.ac.uk
AF: University of Bath, BATH, BATH, BA2 7AY, United Kingdom
AB: Dual Frequency GPS time dealy and carrier phase observations provide a wealth of information about the ionosphere. The differential phase and time delay inform about TEC and the phase and amplitude of signals about the irregularities. TEC observations from multiple receivers can be used in a tomographic algorithm to produce maps of the spatial field of electron density. Such an approach can yield the ionospheric motion that is of particular interest during disturbed periods and at all times in high latitude regions where convection plays an important role in the ionospheric morphology. High frequency sampling of phase and amplitude at L1 can reveal scintillation events. Cross-correlation of the TEC, phase or amplitude from closely-spaced receivers reveals plasma irregularity velocity. Examples are drawn from the high-latitude ionosphere over the polar cap and Nother Europe. The discussion focusses on the existing receiver networks and improvements that could be made to the receiver distribution to optimise the ionospheric information that can be obtained.
DE: 2400 IONOSPHERE (6929)
SC: Geodesy [G]
MN: 2007 Fall Meeting