Iran said on Sunday it was developing a weapons system to intercept incoming cruise missiles, state-run Press TV reported.
Iran's English-language satellite television station said the system could hit missiles, without giving further details, Reuters reported.
Iran is embroiled in a dispute with the West over its nuclear program and often makes announcements of progress in its military capabilities.
Israel and the United States, the Islamic Republic's arch-foes, have not ruled out possible military action if diplomatic efforts fail to resolve the nuclear row.
The West suspects Iran of trying to build nuclear bombs while Iran says its program is for peaceful power generation.