Geodesic
Increase of the Height Resolution of Pulse Ionosonde at Sounding by Coherent Pulse Signals
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Kazanskii Gosudarstvennyi Universitet. Uchenye Zapiski. Seriya Fiziko-Matematichaskie Nauki, Tome 150 (2008) no. 3, pp. 5-12 Cet article a éte moissonné depuis la source Math-Net.Ru

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The technique of maximum likelihood estimator of a group delay is proposed at the multifrequency sounding, allowing to increase the height resolution (down to 200 m) with the help of equipment of a usual ionosonde recording a phase. It is important that thus there is no necessity for any significant change to receive-registering equipment.
Keywords: pulse vertical ionospheric sounding, virtual height of reflection, height accuracy, maximum-likelihood method. 
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     title = {Increase of the {Height} {Resolution} of {Pulse} {Ionosonde} at {Sounding} by {Coherent} {Pulse} {Signals}},
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A. D. Akchurin; V. V. Bochkarev. Increase of the Height Resolution of Pulse Ionosonde at Sounding by Coherent Pulse Signals. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Kazanskii Gosudarstvennyi Universitet. Uchenye Zapiski. Seriya Fiziko-Matematichaskie Nauki, Tome 150 (2008) no. 3, pp. 5-12. http://geodesic.mathdoc.fr/item/UZKU_2008_150_3_a0/

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