01011naa#a2200241#i#450# EN\\bibl\36819 20260225214927.3 2500-0535 20200401b2020####ek#y0engy0150####ca ENG RU Analyzing existing applied models of the ionosphere for calculating radio wave propagation and possibility of their use for radar systems. I. Classification of applied models and the main requirements imposed on them for radar aids Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2020 7 с. Journal article local Геология. Геологические и геофизические науки. 55 ENG Aksenov Oleg Jur'evich Kozlov Stanislav Ivanovich Lyakhov Andrey Nikolaevich Trekin Vyacheslav Vladimirovich Perunov Yuriy Mitrofanovich Yakubovsky Sergey Vladimirovich zh-szf.ru