Optical Threat Locator

OTHELLO (ENA-5220) is a family of Hostile Fire Detector (HFD) sensors that detects gun, mortar, rocket and Anti-Tank Guided Missiles (ATGM) fire. OTHELLO sensors are based on electrooptical (EO) technology, rather than acoustic sensors, making it immune to outside noise including heavy vehicles in open or urban environments. EO sensors also provide faster detection with better accuracy.

OTHELLO excels in high Probability of Detection (PD) and low False Alarm Rate (FAR). When fired upon, the system immediately indicates the azimuth and elevation of the hostile fire while instantly classifying the threat. This enables the crew to promptly respond with counter fire or by tactical maneuver.

The system is versatile and can be installed on tanks, combat vehicles, stationary combat posts and manual or Remote-Controlled Weapon Stations (RCWS). OTHELLO can operate as a standalone system or be integrated with radars and other sensors as part of a multi-layered self-protection suite.

ENA-5220 / 5220P

Rapid detection of hostile fire sources

Day and night operation

Effective in both urban and open areas

Low maintenance – no moving parts

Low maintenance – no moving parts


ApplicationsATGM, RPG, mortar, & gun fire detectionSmall arms, sniper fire and RPG detection
Sensor FunctionsThreat localization and classification
Triggering of counter-measure
Slew to Cue
Threat localization and classification
Triggering of counter-measure
Slew to Cue
AzimuthAzimuth and elevation accuracy: 2.5 mRadAzimuth accuracy: ± 5°
FOV103° X 30° (360° X 30° with four sensors)180° X 20° (360° X 20° with two sensors)
Weight15.4 lbs (7 kg)13.2 lbs (6 kg)
Dimensions (W x H x D)10.8 x 5.7 x 6.6 in (275 x 145 x 167 mm)12.7 x 3.2 x 8.8 in (322 x 82 x 223 mm)
Power Consumption35 W2 W