Digita Signal Processing, C/C++ programming, estimation of position by means of signal GPS, Digital Communication, Sabsurface Radiolocation.

1963 — graduate of Riga Civil Aviation Engineer Institute.
1967 — holder of first higer degree (defended of kandidat dissertation).
1974 — senior lecturer (docent) of Radiolocation Departament of Riga Civil Aviation Engineer Institute.
1992 — defended of doctoral thesis (dissertation) in Leningrad, LAIBI (ЛИАП).
1997 — professor of Avation Communication Departamet of Riga Aviation University.
1999 — professor of Transport Technology Institit of Riga Technical University (RTU).
2002 — professor of Trancport Electronic and Telematic Departament RTU.

1. A. Zelenkov, V. Stroitelev, “An Applications of the Discrete Hilbert Transform for Digital Processing of Subsurface Radar Signals”, Baltic Electronics, 2:3 (1996), 37–40 (angliiskii yazyk)
2. A. V. Zelenkov, S.A.Zelenkov., “Vybor metoda migratsii dlya obrabotki signalov podpoverkhnostnoi radiolokatsii”, ISSN 1392-1215, Electronical and Electrical Engineering, Kaunass Technical University, 3(52) (2004), 41–46 (russkii yazyk)
3. A. Kluga, M. Kulikov, V. Semjonova, A. Zelenkov, “GPS user devices parameter control methods”, Scientific Proceedings of RTU. Series 7. Telecommunications and Electronics, 7 (2007), 45–48 (angliiskii yazyk)
4. V. Narnicka, S. Šarkovskis, A. Zeļenkovs, Ciparu spektrālās anālizes pielietošanas pamati [Osnovy primeneniya tsifrovogo spektralnogo analiza], Uchebnoe posobie, ред. prof. A. Zeļenkov, RTU, Rīga, 2007, 84 s. (latyshskii yazyk)
5. A. Zeļenkovs, Informācijas pārraides un ciparu sakaru sistēmu pamati [Peredacha informatsii i osnovy tsifrovykh sistem svyazi], Mācību grāmata [Uchebnik], RTU, Rīga, 2008, 253 s. (latyshskii yazyk)

• Riga Technical University