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IRST21 Sensor System

IRST

IRST21 is the next generation of Lockheed Martin’s legacy IRST sensor system, which accumulated over 300,000 flight hours on F-14 and international F-15 platforms. As a passive, long-range sensor system, IRST21 uses infrared search and track technology to detect and track airborne threats with weapon-quality accuracy, increasing pilot reaction time and improving survivability.

A compact design enables IRST21 to be integrated in a variety of ways. On the F/A-18E/F, IRST21 is mounted on the nose section of the centerline fuel tank. A podded sensor system with IRST21 is also in development and will be transportable across a wide range of platforms including the F-15C and F-16.


IRST21 is a trademark of Lockheed Martin Corporation.

IRST21

IRST21 detects targets over long distances and operates in environments where radar isn’t an option. (Photo by Lockheed Martin)

IRST21

IRST21 can be mounted in a variety of ways, including the nose section of the F/A-18E/F’s centerline fuel tank. (Photo by Lockheed Martin)

IRST21

Lockheed Martin plans to provide 170 IRST21 systems to the U.S. Navy. (Photo by Lockheed Martin)

IRST21

IRST21, pictured on the F/A-18F, is a passive, long-wave infrared sensor system that searches for and detects heat sources within its large field-of-regard, enabling long-range detection and track of enemy targets under normal and electronic attack environments. (Photo by Lockheed Martin)

IRST21

IRST21, shown on the F/A-18E/F, provides autonomous, accurate tracking data that increases pilot reaction time and improves survivability. (Photo by Lockheed Martin)

IRST21

IRST21 is the next generation of Lockheed Martin’s legacy IRST sensor system, which accumulated more than 300,000 flight hours on F-14 (pictured) and international F-15 platforms. (Photo courtesy of the U.S. Navy)

IRST21

IRST21 detects targets over long distances and operates in environments where radar isn’t an option. (Photo by Lockheed Martin)

Product Card

IRST21 Sensor System