Bangladesh Air Force ordered AESA RADAR Selex RAT-31DL

The Bangladesh Air Force is going to purchase a long-range air defence radar to be set up in Barisal to bolster security system in the southern region, officials said.
The cost of the radar to be supplied by Finmeccanica of Italy has been fixed at Tk 147 crore.
Finmeccanica, also known as Leonardo, was selected by the air force in June from amongst five bidders for the deal.
Thales Raytheon System of France, Poly Technologies Inc and CETC of China and ANPC of the United States also competed in the bid.
Officials said that the air force had planned to pay the price in three phases with Tk 110 crore in the current financial year.
The air force sent a letter to the finance ministry for its approval for the payment of instalments to the supplier from the budgetary allocations.
The letter said that the radar would be commissioned in Barisal as part of the Forces Goal Vision 2030.
According to the Forces Goal Vision 2030, the air force has long-term procurement plans including acquiring new generation fighter aircraft between 2020 and 2025.



SELEX Sistemi Integrati, a Finmeccanica company, signed an agreement with the Procurement department of the Ministry of Defence of the Federal Republic of Germany (BWB), to supply two L-BandLong Range 3D air surveillance Mobile Radars (RAT 31 DL/M) for the German Air Force.


RAT 31 DL/M Radar systems are based on the technology used for the RAT 31 DL/FADR (Fixed Air Defence Radar) systems, in service or on delivery to a large number of NATO/European and extra European countries, both in fixed or transportable configuration. The compact L-Band RAT 31 DL/M Radar system derives from successful RAT 31 DL, a NATO standard, already selected by eight countries. The current production of these systems carries the highest maturity and technological level.

The RAT 31 DL/M Radar systems, consisting of a foldable antenna and a shelter, both in two ISO 20 ft packages, can be transported in one A400M type aircraft as well as on truck and rail. This configuration allows for a high degree of mobility and fast deployment/re-deployment of the system, which is carried out autonomously, without external cranes or other on-site technical support, also on unprepared sites.

The solid-state phased array monopulse radar has got an antenna with an area of 77 m² (11 m·7 m). It works with 42 rows with 52 radiators per row and 42 transmitter/receiver modules with a power of 2 kilowatts. Further advantage is gained from the beam-forming technique used (squintless electronic phase scanning in elevation) which allows the simultaneous independent management of the system's four transmission beams without any break in the frequency band. The detection envelope a 360° in azimuth (a mechanically 6 rpm rotation) up to a range of 270 nautical miles and an altitude up to 92 kft. The RAT-31DL/M includes a fully integrated SIR-M secondary monopulse radar with a maximum range up to 250 nautical miles.