LIAS - Laser Warning Receiver System

LIAS is aa advanced threat warning system to detect, classify, identify and give warning of hostile laser threats aiming on the platform, in a very short time with high sensitivity. LlAS can activate the countermeasure systems available on the platform either directly or via a host computer.

LlAS is designed to detect almost all types of laser threats available in the world military inventory. Laser Range Finders (LRF), Laser Designators (LD) and Laser Beam Riders (LBR) threats operating on various optical bands can be detected by the system.

Thanks to the state-of-the-art technology, LlAS also delivers the threat alarms in a very short term which enables the pilot to employ the fastest counteraction and/or maneuver.

LlAS is comprised of one Processor Unit and 4 Sensor Units installed on the body of the platform. The open-architecture design of the system permits easy installation and integration on a helicopter or a transport aircraft.


  • Detects Enemy Laser Threats
    • Laser Range Finder (LRF)
    • Laser Target Designator (LTD)
    • Laser Beam Rider (LBR)
  • Designed and Qualified for Airborne Platforms

General Specifications

  • High Sensitivity
  • Fast Response Time
  • Threat Classification (LRF, LTD, LBR)
  • Threat Identification and Prioritization

    (Via MDF-Mission Data File)
  • High Resolution Direction of Arrival (DOA) Detection
  • Detection of Pulsed and CW Modulated LBR
  • Optional Band IV (8-12 µm) Wavelength Coverage
  • 360° Coverage in Azimuth
  • High Probability of Detection (PoD)
  • Very Low False Alarm Rate (FAR)
  • Threat Wavelength Band Detection
  • PRF (Pulse Repetition Frequency) Detection
  • Threat Tracking
  • Multiple Simultaneous Threat Detection and Tracking
  • Multiple MDF Capability
  • Data Recording Facility (Event and Pulse Parameters)

    For Post Processing
  • Hardware and Software Blanking Interface
  • Zeroize Input for Erasing the Critical Data From Memory
  • CM (Counter-Measure) Activation Interface
  • High MTBF Figure
  • Interface to Host Computer
  • Test Equipment for O-Level Maintenance
Technical Specifications
Wavelength Coverage

Band I   : 0.5  µm to 1.1 µm

Band II  : 1.1  µm to 1.65 µm

Band III                : 0.8  µm to 1.1 µm

Band IV                : 8-12 µm (Optional)

Field of Regard

Azimuth    : 360°

Elevation : > 80°

Direction of Arrival Accuracy

Band I-II : ≤ ±1° (rms)

Band III   : ≤ ±10° (rms)

Band IV  : ≤ ±22.5° (rms)

Probability of Detection

LRF (Band I-II-IV)             : ≥ %95

LD (Band I-II-IV) : ≥ %95

LBR (Band III-IV) : ≥ %99

Communication Interface


Fast Ethernet (100Mbit)


Weight (kg)

Processor Unit : < 3.75

Sensor Unit       : < 3.25

Size (mm)

Processor Unit : < 162x102x195

Sensor Unit       : < 172x152x132

Environmental Conditions 
Operating Temperature-40°C to +60°C  
Storage Temperature-55°C to +85°C  
Environmetal Spec




Note: All tolerances are within ±10%. Specifications may change without prior notice.


Important Features