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Contents
Tomography
This chapter presents an introduction to groundbased
tomography of ionospheric emissions. An investigation of
the resolution and error sensitivity of a twodimensional
tomographic system is preformed and it is found that the
full width at half maximum of the point spread function
varies from 4 km at 120 km altitude to 10 km at 210 km
altitude for an input point with side lengths of 2
km. Together with the error sensitivity of the problem
this implies that the result of the tomographic inversion
cannot retrieve fine scale internal structures. However,
estimates of the spatial distribution of ionospheric
emissions which, in general, have a comparatively simple
shape, can be accurately obtained.
Further a strengthening of the statistical stopping criteria by
Veklerov and Llacer (1989a) is presented.
Subsections
copyright Björn Gustavsson 20001024
