TEHRAN - Iran began testing radar systems on the third day of its air defense drills, the local satellite Press TV reported on Thursday.

According to spokesman of the drill Brigadier General Hamid Arjangi, various kinds of fixed and mobile radars indigenously manufactured or refurbished would be tested during the third day of the drills, said the report.

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The military official added that all types of the country's radar systems, which would relay intelligence to the unified command and control networks, would be utilized and examined during the third day of the maneuvers.

Arjangi pointed out that reconnaissance missions to detect state-of-the-art systems of theater enemies using radars were also on the agenda of the third day of drills, said Press TV.

During the second day of drill, advanced communication equipment and modern electro-optical systems were successfully tested, according to local media.

Iran launched one of its largest nationwide air defense drills on Tuesday, assuming possible attacks on its public or nuclear establishments. Aerial defense units from the army and the Islamic Revolution Guards Corps (IRGC) are taking part in the three-stage, five-day defense maneuvers dubbed "Modafean Aseman Velayat 3" (the Guardians of Islamic Skies).