AN/ALQ-218 RWR/ESM/ELINT Sensor System

AN/ALQ-218 EW Receiver Suite (ICAP III EA-6B Upgrade)

Northrop Grumman's AN/ALQ-218 Radar Warning Receiver / Electronic Support Measures / Electronic Intelligence (RWR/ESM/ELINT) Sensor System is the U.S. Navy's choice for airborne situational awareness and signal intelligence gathering. 

A passive, high performance SIGINT sensor system, the AN/ALQ-218 protects the warfighter by detecting, identifying, locating and analyzing sources of radio frequency (RF) emission.
The AN/ALQ-218 family is currently in production and installed on both the EA-18G and P-8A Poseidon ASW/ASUW aircraft.  New spiral initiatives are positioning the AN/ALQ-218 as the ESM system of choice for future Unmanned Aerial Vehicles (UAV) and subsurface applications.

The AN/ALQ-218 is the world's only receiver system proven to provide high Probability of Intercept (POI) under "Look-Through" operations, enabling DF & Geolocation, parameter measurement and Intentional Modulation on Pulse (IMOP) detection while simultaneously supporting enemy radar threat jamming. The AN/ALQ-218 also supports Specific Emitter Identification (SEI) characterization.

The AN/ALQ-218 utilizes a unique combination of short and long baseline interferometer techniques along with a patented passive ranging algorithm to provide precision Geolocation of all ground-based emitters.

ELINT signal analysis software is easily provided via the NGC PASS (Parameterizer & Analysis Software System) tool which receives signal data from analog or digital sources and provides measurement tools for analysis in either pre-detected or Pulse Descriptive Word (PDW) domain.

AN/ALQ-218 system features:

  • Broad Radio Frequency Range: Bands 0, 1, 2 and band 3
  • Signal Types: Radar (Pulsed & CW) with optional COMMs support
  • High Sensitivity and Dynamic Range
  • Dynamic Tuning in sparse signal environment (Jamming)
  • Passive Precision Geolocation expandable to targeting accuracies
  • Specific Emitter Identification (to USG MISPE standards)
  • Commercial Interference Mitigation (in bands 0 & 1)
  • Enhanced Fine Frequency Measurement supporting Jamming
  • Latest generation Frequency Domain Digital Channelized Receiver
  • TRL 9 Technology  (Hardware and Software)