The Selex RAT-31DL is a long-range air surveillance radar manufactured by Leonardo (previously Selex ES, SELEX Sistemi Integrati and later Finmeccanica). The acronym RAT stands for Radar Avvistamento Terrestre, an Italian term for such "ground-based reconnaissance radar".
The RAT-31DL is an L-band solid-state active phased array 3D radar with an effective range of over 500 km. It is derivative of widely used RAT-31 SL.
The RAT 31DL is a solid-state active phased array radar with monopulse antenna with 42 rows of 42 Tx/Rx modules of which 24 boosted, each with 2 kW output power. The 360 ° search is performed with four independent beams in the L band at 6 rpm, the vertical pivoting of the beams is done by means of electronic phase shift of the 42 rows feeding the antenna.
RAT-31DL/M
The mobile RAT 31 DL / M radar variant is derived from the stationary FADR version. The RAT 31 DL / M consists of a fold-able antenna and an equipment shelter, which are housed in air transportable 20-foot ISO containers. This configuration allows rapid deployment with high mobility and allows deployment in an unprepared position.
See also Selex RAN-40L Naval Long Range Surveillance radar.
Operators
Austrian Air Force: 3 RAT-31 DL, 1 RAT-31 DL/M
Bangladesh Air Force: 1 system.
Italian Air Force
German Air Force
Royal Malaysian Air Force
Polish Air Force
Royal Danish Air Force
Czech Air Force
Hellenic Air Force
Hungarian Air Force
Spanish Air and Space Force
Royal Thai Air Force
Egypt Air Force
Turkish Air Force
Royal Air Force
Indonesian Air Force
References