Erieye

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Erieye
EMB-145 FAM.jpg
An Embraer R-99A of the Mexican Air Force with Erieye radar mounted on the fuselage
Country of origin Sweden Sweden
Introduced 1996
Type Multi-mode active electronically scanned array (AESA) pulse doppler radar
Frequency S-band
Range 450 km
Altitude > 20 km (> 65,000 ft)
Azimuth 150° to each side

The Erieye radar system, is an Airborne Early Warning and Control System (AEW&C) developed by Saab Electronic Defence Systems (formerly Ericsson Microwave Systems) of Sweden. It uses active electronically scanned array (AESA) technology. The Erieye is used on a variety of aircraft platforms, such as the Brazilian Embraer E-99 or EMB-145. It has recently been implemented on the Saab 2000 aircraft.

The Erieye Ground Interface Segment (EGIS; not to be confused with the Aegis combat system) is a major component of the software used by the Erieye system.

The radar provides 300 degree coverage and has an instrumental range of 450 km and detection range of 350 km in a dense hostile electronic warfare environment—in heavy radar clutter and at low target altitudes. In addition to this, the radar is also capable of identifying friends or foes, and has a sea surveillance mode.

The Erieye system has full interoperability with NATO air defence command and control systems.

History[edit]

In 1985 Ericsson Microwave Systems were contracted by the Swedish Defence Material Administration to develop what would become the PS-890 Erieye AEW radar. In the same year a dummy dual-sided phased array antenna was tested on a twin-engined Fairchild Metro aircraft. In 1987 the Metro aircraft was fitted with the radar system for flight trials. Production of the radar started in 1993 following an order for six radars for the Swedish Air Force for fitment in Saab 340 aircraft. The first two production radars were delivered in 1996.

Design[edit]

The Saab 2000 Erieye AEW&C, developed for the Pakistan Air Force, on display at the 2008 Farnborough Airshow.
An S 100 B Argus (Saab 340 AEW&C) in flight at the Swedish Armed Forces' Airshow 2010

The Erieye AEW&C mission system radar is an active, phased-array, pulse-doppler sensor that can feed an onboard operator architecture or downlink data (via an associated datalink subsystem) to a ground-based air defence network. The system employs a large aperture, dual-sided antenna array housed in a dorsal 'plank' fairing. The antenna is fixed, and the beam is electronically scanned, which provides for improved detection and significantly enhanced tracking performance compared with radar-dome antenna systems. Erieye detects and tracks air and sea targets out to the horizon, and sometimes beyond this due to anomalous propagation — instrumented range has been measured at 450 kilometres (280 mi). Typical detection range against fighter-sized targets is approximately 425 kilometres (264 mi), in a 150° broadside sector, both sides of the aircraft. Outside these sectors, performance is reduced in forward and aft directions.

Other system features include: Adaptive waveform generation (including digital, phase-coded pulse compression); Signal processing and target tracking; track while scan (TWS); low side lobe values (throughout the system's angular coverage); low- and medium-pulse repetition frequency operating modes; frequency agility; Air-to-air and sea surveillance modes; and target radar cross-section display.

The radar operates as a medium- to high-PRF pulse-Doppler, solid-state radar, in E/F-band (3 GHz), incorporating 192 two-way transmit/receive modules that combine to produce a pencil beam, steered as required within the operating 150° sector each side of the aircraft (one side at a time). It is understood that Erieye has some ability to detect aircraft in the 30° sectors fore and aft of the aircraft heading, but has no track capability in this sector.[1]

Some users[edit]

 Brazil
 Greece
 Mexico
 Pakistan
 Saudi Arabia[2]
 Sweden
 Thailand
 United Arab Emirates - 2 ordered.[3]

Applications[edit]

References[edit]

External links[edit]