01005naa#a2200241#i#450# EN\INFRA-M\bibl\28729 20241121183454.4 2712-9640 20200330b2020####ek#y0engy0150####ca RUS 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 Moscow INFRA-M Academic Publishing LLC. 2020 10 с. Journal article local Геология. Геологические и геофизические науки. 55 RUS Aksenov Oleg Jur'evich Kozlov Stanislav Ivanovich Lyakhov Andrey Nikolaevich Trekin Vyacheslav Vladimirovich Perunov Yuriy Mitrofanovich Yakubovsky Sergey Vladimirovich zh-szf.ru