E-2C Hawkeye

The E-2C Hawkeye improved IFF interrogator detector-processor group (OL-483/AP) is the world standard for long-range airborne surveillance Mark XII IFF and electronic countermeasures (ECM) processing. The system operates in conjunction with the primary AN/APS-145 radar, with the secondary radar antenna collocated in the E-2C rotodome, and is suitable for all AEW, ASW, and SAR applications. Further, it can be integrated with a variety of radar systems on your desired aircraft.

Airborne interrogator Features:

• Mark XII interrogation and reply evaluation
• Modes 1, 2, 3/A, C, 4 (super mode)
• Operates in conjunction with AN/APS-145 primary radar
• MTBF: field experience: 10,500 hours
• Integral countermeasures functions
• Extensive self-test and loop-test capability
• Fully qualified and operational
• Coverage: 360° AZ, 45° EL

The Mark XII function incorporates both continuous and sector operation. The interrogator capability provides three-mode selective identification feature (SIF) interlace with a fourth mode on alternate scans of the antenna. Mode 4 is incorporated using super mode (SIF and Mode 4 on the same interpulse period) in designated azimuthal sectors.

The IFF target report includes range, azimuth, SIF code, and Mode 4 friend identification. Reports also include flags for interrogation multipath, reply multipath, I/P, emergency, and potential azimuth position errors from garble conditions. The reply function also will exclude designated x-y map grid zones from reply detection.

The system uses dedicated serial data interface with the aircraft central computer. Input serial messages provide commands and data. Output serial messages provide target reports, status reports, and in-flight performance monitoring (IFPM) reports.

The improved IFF system provides video outputs to the operator displays, control indicator station (CIS).

Extensive growth capability exists to accommodate interrogator side lobe suppression (ISLS), Mode S interrogation and the future Mode 5 waveform.