Physics – Geophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa43b1768m&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SA43B-1768
Physics
Geophysics
[2494] Ionosphere / Instruments And Techniques, [3260] Mathematical Geophysics / Inverse Theory, [4400] Nonlinear Geophysics, [6982] Radio Science / Tomography And Imaging
Scientific paper
Most of the recent methods in ionospheric tomography are based on the inversion of the Total Electron Content (TEC) measured by ground-based GPS receivers [e.g., Garcia et al. 2008]. As a consequence of the high frequency of the GPS, the electron density structure is principally well reconstructed at the F2 region, where the ionosphere reaches the maximum of ionization, neglecting the lower ionosphere. Here we present a new tomographic method of the lower ionosphere, based on the full analysis of over-the-horizon (OTH) radar data. Previous studies in ionospheric tomography by OTH radar (Fridman and Fridman, 1994; Ruelle and Landeau, 1994; Landeau et al., 1997; Fridman, 1998) are all based on the inversion of the leading edge echo curve, consequently an important amount of valuable information present in the data is necessarily neglected. To overcome this limit, we set up an inverse problem based on the ray-tracing tool TDR: comparing data with the synthetic propagation of electromagnetic wave in an a priori hetherogenic 3D ionosphere (NeQuick) we arrive to map lateral variations in plasma density. The major advance of our methodology is taking account, numerically and jointly, the variation from the electron density model and the perturbation in the ray-path. The developed methodology will be presented in details using a set of synthetic benchmark tests. [Fridman and Fridman, 1994] J. Atmos. Terr. Phys., 56, 115-131, 1994 [Ruelle and Landeau, 1994] J. Atmos. Terr. Phys., 56, 103-114, 1994. [Landeau et al., 1997] J. Atm. Solar Terr. Phys., 59, 125-138, 1997. [Fridman, 1998] Radio Sci., 33, 1159-1171, 1998. [Garcia & Crespon, 2008] Radio Sci., 43, RS2014, 2008.
Boschi Lapo
Lognonné Philippe
Molinié J.
Occhipinti Giovani
No associations
LandOfFree
IONOTOMO: Ionospheric Tomography by OTH radar does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with IONOTOMO: Ionospheric Tomography by OTH radar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and IONOTOMO: Ionospheric Tomography by OTH radar will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1505901