Other
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsa23a..02h&link_type=abstract
American Geophysical Union, Spring Meeting 2007, abstract #SA23A-02
Other
2415 Equatorial Ionosphere, 2467 Plasma Temperature And Density, 2481 Topside Ionosphere, 2494 Instruments And Techniques
Scientific paper
A new series of topside ionospheric measurements at Jicamarca incorporating full-profile analysis of long-pulse data are presently emerging. Full-profile analysis utilizes statistical inverse theory to estimate ionospheric parameters (plasma number density, temperature, and composition) simultaneously at all altitudes. Traditional range-gated analysis of long-pulse data is impractical at Jicamarca, where the long correlation time of the incoherent scatter invalidates important assumptions regarding homogeneity. Coded longpulse methods are often used at Jicamarca, but their sensitivity is limited by radar clutter, rendering them marginal during solar minimum conditions. Full profile analysis may be regarded as optimal, fully accounting for the effects of the radar instrument function, the complete error covariance matrix, and other experimental effects and biases in principle. The poor conditioning and mixed determined nature of the problem must be mitigated by regularization, however. Our technique is incorporates Faraday rotation data for absolute calibration. Validation necessitates spacecraft observations, including in situ (DMSP) and path-integrated (COSMIC, C/NOFS) measurements.
Chau J. J.
Hysell David
Rodrigues Fabio
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