Before sugessting the capability of any aircraft(AEW&Cs) we should consider some specs and its sensor credibility.
1.737 AEW&C Wedgetail (U.S.A).
Specifications
Dimensions:
Length
33.6m
Wingspan
35.8m
Tail Height
12.5m
Fuselage Diameter
3.73m
Crew:
Flight Crew
2
Mission Crew
6 to 10
Primary Radar:
Type
electronically scanned array, all weather
Frequency
L-band
Coverage
360º air and maritime
Range
more than 200nm
IFF Range
300nm
Tracking Capability
More than 3,000 targets
Multi-role Mission Consoles
6
Performance:
Maximum Take-off Weight
171,000lb (77,110kg)
Operating Altitude
30,000ft to 40,000ft
Maximum Operating Altitude
41,000ft
Nominal Cruise Speed
410 KTAS (knots true air speed)
Time on Station
More than 9 hours
Range Endurance
3,800nm
Communications:
HF Communications
3
VHF/UHF
8
Tactical Links
Link 4A, Link 11
Boeing 737-700 aircraft
The aircraft selected for the Wedgetail is the Boeing 737-700 increased gross weight variant (IGW), based on the airframe of the Boeing Business Jet. The aircraft is flown by two flight crew with between six and ten mission crew.
The aircraft operates at an altitude of 30, 000ft to 40,000ft with a maximum operating altitude of 41,000ft. The aircraft has state-of-the-art flight deck, avionics and navigation equipment. It has an extensive communications suite including three HF, eight VHF/UHF communications systems together with Link 4A and Link 11 systems.
Engines
The aircraft is equipped with two CFM International CFM56-7B24 engines each rated at 118kN. The aircraft's maximum take-off weight is 171,000lb (77,110kg). The range is 3,800 nautical miles and the time on station is estimated at more than nine hours.
The aircraft has a flying boom receptacle and a fixed probe providing dual in-flight refuelling capability.
Mission avionics
The Advanced Systems Division of BAE Systems North America is to supply major elements of the aircraft's mission avionics, including cockpit tactical mission displays, command and control consoles and mission computers. There are six multi-role / multi-purpose mission consoles with ultra-high resolution flat panel tactical displays installed in the aircraft. Production of the equipment is scheduled to be carried out at BAE's Advanced Systems Greenlawn facility.
The computers use advanced signal processing algorithms to analyse, categorise and prioritise the data. The data is presented to the mission crew on an integrated situation display on the system console. The open system architecture ensures that the systems can be upgraded and extended. The AEW&C Wedgetail aircraft is compatible and interoperable with the E-3 and 767 AWACS airborne warning and control system aircraft.
The AEW&C Peace Eagle aircraft for Turkey are being fitted with EADS Defence Electronics multi-sensor integration software.
Radar
The MESA multi-role electronically scanned array radar is being supplied by Northrop Grumman Electronic Sensors and Systems Division, based in Baltimore. Tenix Defence Systems of Adelaide, Australia, is supplying some components and modules for the radar. MESA provides 360° coverage and a range of over 200nm.
The radar has a system track capability of 3,000 targets and can track air and sea targets simultaneously.
The system's variable track update rates and dedicated tracking modes allow the operator to track allied and hostile high performance aircraft while continuously scanning the area of operations.
The electronically scanned array features an assembly of transmit and receive modules, operating at L-band and sharing three apertures to provide the 360° coverage. The radar system provides a high level of operational capability because the system is dynamically structured to match the changing mission requirements. When an operator requires a long range view of a selected sector of the operational area, then the relevant system modes can be selected to initiate the search of that sector at more than twice the nominal uniform surveillance range.
An integrated identification friend or foe system (IFF) is combined with the primary radar and uses the same aperture as the primary radar, which avoids target correlation problems. The IFF system has an operational range of over 300nm.
The distinctive 'Top Hat' radome provides a low aerodynamic drag profile while meeting the requirement for fore and aft coverage. Two large strakes are fitted on the underside at the rear section of the fuselage. The strakes provide an aerodynamic balance to offset the effect of the MESA radome on the upper surface of the fuselage. In January 2005, flight tests of the aircraft were temporarily suspended while the upper surface of the radome was raised by about 100mm, to improve radar performance.
Countermeasures
BAE Systems Australia is responsible for the electronic warfare self protection and electronic support measures subsystems for the Wedgetail.
Elta Electronics of Israel has been selected to supply the advanced ESM/ELINT electronic support measures system.
The system provides 360º instantaneous surveillance and is similar to Elta ESM systems on RAAF P-3C Orion maritime patrol aircraft.
In February 2002, Northrop Grumman Electronic Sensors was awarded the contract to provide the AN/AAQ-24(V) Nemesis directional infrared countemeasures (DIRCM) system, augmented with the Viper solid state multiband laser.
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Now the Saab-2000 AEW&C Sweden (the superior one):
Specifications
Dimensions:
Length
27.28m
Fuselage Diameter
2.31m
Height
7.73m
Wingspan
24.76m
Tailplane Span
10.36m
Engines:
Turboprop Engines
2×Rolls-Royce AE 2100A
Engine Power
3,095kW
Performance:
Maximum Endurance
Over 9.5 hours
Maximum Range
Over 2,000nm
Time to Climb to 25,000ft
15 minutes
Cruise Speed
340kt (TAS)
Patrol Speed
160kt (IAS)
Take-Off Run
1,400m
Service Ceiling
30,000ft
Radar:
Frequencies
3.1GHz to 3.3GHz
Effective Surveillance Area
500,000km²
Instrumental Range
450km
Dtection Range
350km against a fighter aircraft sized target
Tracking Capability
multiple air and sea target over the horizon
Altitude Coverage
20km
Countermeasures:
ESM
Saab Avitronics HES-21 ESM
ESM Coverage
360°
ESM Radar Receivers
7GHz to 2GHz, 2GHz to 18GHz and 28GHz to 40GHz
Self Protection System
Radar warner, LWS-310 laser warner, MAW-300 missile warner, chaff / flare dispenser
Laser Warner Waveband
0.5 to 17 microns
Saab 2000 construction
Saab Surveillance Systems is the lead contractor for the Saab 2000 AEW&C programme. Saab Aerotech is responsible for the development and modification of the Saab 2000 regional aircraft to the AEW&C configuration. Six other Saab business units are also contracted for major elements of the programme.
The outer wing sections have been strengthened, as has the roof of the fuselage, to accommodate the weight of the Erieye antenna and its housing. The vertical tail area has been increased to provide improved stabilisation.
Main cabin
The main cabin is fitted with five mission operator consoles on the starboard side. The windows on the starboard side of the main cabin have been removed. The cabin is air-conditioned and fitted with an active noise cancellation system.
The aft section of the main cabin accommodates fuel tanks and mission equipment. Two auxiliary fuel tanks are installed on the starboard side in the mid fuselage section immediately aft of the mission consoles.
The mission operator consoles perform: system and sensor management; mission planning and simulation; track data processing; asset management and control; identification and allocation. The display systems incorporate digital maps and use high-resolution flat-panel colour displays and touch input display controls. The main cabin aft section also accommodates the electronic warfare equipment, the Erieye equipment and the Erieye power units.
Radar
Saab Microwave Systems (formerly Ericsson) is the lead contractor for the Erieye surveillance radar. The Erieye radar is operational on a number of other aircraft including the Saab 340, Embraer R-99 and Embraer EMB-145. Erieye is an active phased array pulse Doppler radar operating in the 3.1GHz to 3.3GHz band. The radar is operational from three minutes after take-off and during climb and provides an effective surveillance area of 500,000km².
The Erieye radar has an instrumental range of 450km and detection range of 350km against a fighter aircraft sized target in dense hostile electronic warfare environments and at low target altitudes. The system is capable of tracking multiple air and sea target over the horizon and provides above 20km altitude coverage, 360° coverage and has sea surveillance capability. The radar incorporates an identification friend or foe interrogator. The system comprises an active phased array pulse Doppler radar with a secondary surveillance radar.
The fixed dual sided electronically scanned antenna array is installed in a rectangular housing, dorsally mounted above the fuselage.
Electronic warfare suite
The aircraft's electronic warfare suite is based on the Saab Avitronics HES-21 electronic support measures (ESM) and self-protection suite. The HES-21 also provides a ground-based support system (EGSS), which provides mission data for the aircraft electronic warfare system and for analysis of recorded data.
Electronic support measures
The electronic support measures (ESM) system comprises digital narrow band and wide band receivers and associated antennae, providing close to 100 % probability of intercept (POI). The digital receiver is equipped with interferometer antenna arrays.
The ESM obtains the electronic order of battle (EOB) data and intercepts, characterises and identifies signals, defines their direction of arrival, generating and displaying warning information. The ESM system operates autonomously and allows real time ESM analysis and presentation to the ESM operator on board the aircraft. ESM data is recorded during missions for post mission tactical and technical analysis. Information is transferred to other onboard systems including the command and control system and the radio data link-controller.
The radar receivers cover low band (7GHz to 2GHz), mid band (2GHz to 18GHz) and high band (28GHz to 40GHz).
The digital RF receiver provides very high sensitivity and selectivity and uses fast Fourier transforms (FFT) and channelisation signal processing techniques. The ESM's wide band and narrow band receivers provide 360° coverage, and close to 100% probability of intercept. The system provides high sensitivity and selectivity in dense and hostile signal environments.
Self-protection system
The self-protection system (SPS) comprises: defensive aids control system, radar warning, laser warning, missile approach warning and chaff and flare dispenser systems. The self-protection suite provides selection and, in automatic mode, the initiation of the chaff and countermeasures sequences.
The laser warning system is based on the Saab Avitronics LWS-310 laser warner operating in the 0.5 to 17 microns wavelength bands. Spatial and spectral coverage is provided by an array of three sensors on each side of the aircraft.
The missile launch and approach warner (MAW) is based on the Saab Avitronics MAW-300, which can simultaneously monitor and track up to eight threats. It has four sensors, two on each side, and each with 110° azimuthal coverage to provide the overlapped 360° spatial coverage.
The chaff and flare dispensing system (CFDS) comprises a dispenser control unit, (CFDC) with a cockpit mounted display and control panel, defensive aids suite computer with a threat library database, two BOL electromechanical dispensers and six BOP pyrotechnical dispensers.
The BOL dispenser is a high-capacity, 160-cartridges, electro-mechanical chaff dispenser. The BOL dispensers are installed in the fairings under the wingtip-mounted radar warning pods. The dispenser incorporates vortex generators which provide chaff blooming characteristics and a chaff cloud Doppler response.
The BOP dispenser is a pyrotechnic dispenser carrying Nato standard rectangular cartridges or magazines of 39 1in² cartridges. The dispenser has the capability to dispense different ammunition types concurrently. The BOP dispensers are housed on each side of the underside of the fuselage to the aft of the wings.
Engine
The aircraft is fitted with two Rolls-Royce AE 2100A turboprop engines developing 3,095kW.
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