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Forecasting and updating HF channel parameters on the basis of oblique chirp sounding
Author(s) -
Ivanov Vladimir A.,
Ryabova Nataliya V.,
Shumaev Vladimir V.,
Uryadov Valery P.
Publication year - 1997
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/96rs03168
Subject(s) - middle latitudes , basis (linear algebra) , depth sounding , channel (broadcasting) , chirp , high frequency , oblique case , ionosphere , term (time) , computer science , spatial correlation , remote sensing , algorithm , geology , meteorology , mathematics , telecommunications , geophysics , physics , optics , laser , oceanography , geometry , linguistics , philosophy , quantum mechanics
Lowest observed frequency (LOF) and maximum observed frequency (MOF) spatial‐temporal correlation data for midlatitude long‐distance paths are presented. The possibility of improving LOF and MOF forecasting accuracy for links without diagnostic systems by means of linear regression methods and a semiempincal ionospheric model is investigated, and a comparison is made of the effectiveness of providing HF communication frequencies on the basis of long‐term forecasting and real‐time channel evaluation.