Sepehr (Persian: سپهر, meaning "sky") is an over-the-horizon radar (OTH) developed by Iran.
Little is known of the project, except it has a reported range of 3,000 km.
[1] It was originally scheduled to enter operational status in 2013.
[2] In August 2013, Iran announced completion of a first phase of the project with a range of only 300–700 km.
[3] In 2014 Iran announced it wished to establish a space-based radar system.