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FUTURE TRENDS OF AIRBORNE AESA RADAR SYSTEMS.

FUTURE TRENDS OF AIRBORNE AESA RADAR SYSTEMS. Phased Array. A phased array is made up of individual antennas or radiating elements, whose effective (summed) radiation pattern can be altered by phasing the signals of the individual elements.

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FUTURE TRENDS OF AIRBORNE AESA RADAR SYSTEMS.

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  1. FUTURE TRENDS OF AIRBORNE AESA RADAR SYSTEMS.

  2. Phased Array • A phased array is made up of individual antennas or radiating elements, whose effective (summed) radiation pattern can be altered by phasing the signals of the individual elements.

  3. By varying the phasing of the different elements, the radiation pattern can be modified to be maximized / suppressed in given directions, within limits determined by (a) the radiation pattern of the elements, (b) the size of the array, and (c) the configuration of the array

  4. Types of Phased Array Radar system. • Passive Electronically Scanned Array (PESA)- common RF source (single source). • Active Electronically Scanned Array (AESA) – solid state Transmit/ Receive modules.

  5. Attributes of Phased Array Radars • Inertia-less and rapid beam steering. • Multiple independent beams. • Adaptive Processing . • Time shared multi-function capability. • Significantly higher cost than other alternatives

  6. Electronic Scanning • Increased Data Rates • Instantaneous Beam Positioning • Elimination of Mechanical Errors • Multi-mode Operation • Multi-target capability

  7. Limitations of Mechanical Scanning Radars • Positioning Antenna is SLOW • Reduced reaction times. • Blind Sided. • Mechanical error

  8. Why AESA Radar? • Extended range • Multi-function capability • High reliability • Low Probability of Intercept • Increased power efficiency, • Independent scan and track

  9. Drawbacks • Very costly. • Limited frequency band. • Power dissipation

  10. FUTURE PLANS • Development of MMIC active phased array. • Clutter rejection for an Airborne system (STAP and DPCA). • Exploiting Digital Beam forming (jamming) • Row-Column Steered Arrays. • Micro-Electro-mechanical (MEMS) components. • Increase in the operating frequency band of systems.

  11. Multi-Mission Active Electronically Scanned Array (AESA) Radar for the F-35

  12. REFERENCES • Northrop Grumman Electronic Systems • Status in U.S. AESA Fighter Radar and Development Trends by Wang Yue Cao and Lanying • UK Airborne AESA Radar Research by DrStephen Moore • Where Next For Airborne AESA Technology? by A.M.Kinghorn and SELEX GAULEO

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