Abstract
An efficient electron density profile inversion algorithm is developed for use on automatically scaled digital topside ionograms. The profile‐fitting method described here models the topside ionosphere with a single polynomial, a method particularly suited for autoscaled data because it is not too sensitive to a certain amount of scatter in the h′(ƒ) data and it makes use of ordinary and extraordinary ray echoes. The program was applied to input data consisting of O and X trace segments obtained from automatic scaling of a number of digitized ISIS ionograms. It is shown that fully automatic calculation of the topside electron density profiles from digital topside ionograms can be performed in less than 10 s on a Cyber 71 computer.
Published Version
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