00691naa#a2200193#i#450# EN\\bibl\52934 20240902012057.1 2587-9936 20210925b2021####ek#y0engy0150####ca RUS RU Aircraft Direction Finding by Estimating the Doppler Frequency of Received Radio Signals Journal article Sevastopol Federal State Educational Institution of Higher Education Sevastopol State University 2021 14 с. Journal article local Аппаратура и методы радиосвязи. 621.396 RUS Sinitsyn Evgeny A Friedman Leonid B rusjbpc.ru