European defense against missiles and drones at MSPO 2025

HENSOLDT is known for a wide range of advanced military electronic systems, including radar, reconnaissance, electronic warfare, and optronic solutions. This year, HENSOLDT is placing particular emphasis on radar systems designed for air defense, missile defense, and counter-drone operations.

At the Kielce exhibition, HENSOLDT is presenting the TRML-4D radar. This is a multifunctional radar for detecting, tracking, and targeting aerial threats, which can also be used for directing anti-aircraft fire. The TRML-4D operates in the C-band (NATO designation: G-band). It features an active electronically scanned array (AESA) antenna based on gallium nitride, along with AESA look-back technology, enabling rapid response and initiation of high-priority target tracking, efficient target classification, and high tracking accuracy for fire control with a high update rate.

The TRML-4D can simultaneously track more than 1,500 targets at ranges up to 250 km and altitudes up to 40 km. It can detect fighter aircraft at distances of over 120 km and supersonic missiles at over 60 km. The radar is also capable of tracking friendly missiles, facilitating fire control for surface-to-air missile systems.

The radar can be integrated with the passive air surveillance system Twinvis, providing an air picture even in passive mode. It is also highly resistant to electronic countermeasures thanks to built-in ECCM functions. The TRML-4D is a mobile system that can be mounted on vehicles such as the MAN HX77, with deployment and redeployment times of less than 10 minutes. HENSOLDT has increased annual production of the TRML-4D from three to fifteen units within two years and continues to expand production capacity. In July 2025, HENSOLDT received a €340 million (approx. $370 million) contract to supply TRML-4D and Spexer 2000 3D Mk III short-range radars for Ukraine. In total, more than 50 TRML-4D radars have already been sold.

The Spexer 2000 3D Mk III radar can operate both in stationary and mobile configurations, making it suitable for protecting critical infrastructure, as part of C-UAV systems, and for safeguarding moving vehicles. The radar features advanced target-tracking algorithms with automatic classification, offering short reaction and refresh times. It can directly interface with both command-and-control (C2) systems and effectors. The Spexer 2000 3D Mk III is a scalable system, with configurations adaptable to different numbers of antennas, and can even be deployed by individual soldiers.

At MSPO 2025, HENSOLDT is also presenting the passive detection system Twinvis. It uses emissions from non-cooperative transmitters (e.g., radio and television networks) to precisely detect and track aerial targets. A key feature of Twinvis is its fully passive operation, making it invisible to enemy electronic reconnaissance systems. Twinvis can detect targets across a 360-degree field, with an instrumental range of 250 km and an altitude of 12.5 km, achieved by deploying multiple receivers within the protected area. Target detection is based on the TDoA (Time Difference of Arrival) method.

Twinvis provides rapid updates of the radar picture and can serve as an early warning and initial target cueing system for ground-based air defense (GBAD). This minimizes the operating time of active radars and reduces their exposure to enemy air defense systems. An advanced development of Twinvis is Twinsens, which integrates Twinvis with the multifunctional TRML-4D radar. This system combines active and passive radar technologies under unified control and data exchange. Together, these elements form a resilient detection and tracking system for air defense, capable of initial passive operation, high tracking accuracy, and rapid information refresh. Twinsens ensures effective tracking of low-RCS targets, even under jamming conditions.

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