Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
SLAF Mirigama is the Sri Lanka Air Forceradar station in Mirigama. It provides air surveillance and early warning and is home to the No 4 Air Defence Radar Squadron. A ChineseJY-11 Radar low/medium altitude 3D surveillance radar has been installed since 2008 as part of the National Air Defence System of Sri Lanka.