00805naa#a2200205#i#450# EN\INFRA-M\bibl\28029 20240420131413.6 2712-9640 20191217b2019####ek#y0engy0150####ca RUS RU Estimating antenna coupling factor for problem of topside ionosphere sounding from space with using chirp signals Journal article Moscow INFRA-M Academic Publishing LLC. 2019 7 с. Journal article local Астрономия. Астрофизика. Исследование космического пространства. Геодезия. 52 RUS Podlesnyi Aleksey Vitalyevich Naumenko Andrey Vitalyevich Cedrik Mark Vladislavovich naukaru.ru