TRML-4D Radar

Manufacturer: HENSOLDT
Category: Radar and Jamming Systems
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Detection Range Up to 250 km (instrumented)
Frequency Band C-band (4 to 8 GHz), NATO G-band
Antenna Type / Technology GaN-based AESA
Target Tracking Capacity More than 1,500 targets

Defense Systems Full Specifications

1. General Information

Name / Designation	TRML-4D
Manufacturer	HENSOLDT
Country of Origin	Germany
Type / Role	Multifunctional 3D air surveillance radar
Operational Domain	Land-based air defense
Status	In production and operational

2. Technical Specifications

Frequency Band	C-band (4 to 8 GHz), NATO G-band
Antenna Type	Active electronically scanned array (AESA)
Antenna Aperture / Size	Not publicly disclosed
Power Output	Not publicly disclosed
Detection Range	Up to 250 km instrumented
Tracking Range	Fighter aircraft: over 120 km; supersonic missiles: over 60 km
Target Tracking Capacity	More than 1,500 simultaneous targets
Elevation Coverage	Surveillance: -2° to +70°, electronic tilt down to -10°; tracking up to 90°
Azimuth Coverage	360° continuous mechanical rotation with electronic scanning
Beam Steering	Electronic beam steering, digital beamforming
Pulse Repetition Frequency (PRF)	Not publicly disclosed
Resolution	Exact range and angular resolution not officially specified in current public product information
Update Rate	High update rates; exact numerical figure not disclosed
Clutter Rejection / ECCM	Advanced clutter processing, jammer detection and electronic counter-countermeasures

3. Functional Capabilities

Primary Functions	Air surveillance, target acquisition, classification and tracking
Target Types	Aircraft, helicopters, UAVs, cruise missiles and supersonic missiles
Integration / Networking	Ground-based air defense networks, including IRIS-T SLM
IFF Capability	Integrated identification friend or foe, including Mode 5 and Mode S
Data Link / Networking	Air defense command and control integration; specific interfaces are configuration-dependent
Weather & Terrain Resistance	Designed for demanding operational environments; exact weather performance limits vary by configuration
Mobility / Mounting	Mobile 20-foot ISO container configuration

4. Physical & Operational Characteristics

Dimensions	Exact dimensions not publicly disclosed
Weight	Not publicly disclosed
Power Requirement	Not publicly disclosed
Cooling System	Not publicly detailed
Operating Temperature Range	-40°C to +49°C (published operating specification)
Deployment Platform	Cross-country military trucks, including MAN platforms
Crew Requirement	Not publicly specified; supports remote-controlled operation

5. Software & Processing

Signal Processor Type	Digital radar signal processing
Processing Speed	Not publicly disclosed
AI / Automation Features	Automated target detection, classification and tracking; specific AI implementation not publicly confirmed
Data Output / Interface	Air surveillance and weapon assignment data for integrated air defense systems
Software Upgradeability	Software-defined architecture with adaptable radar modes

6. Operational History

Year Introduced	Introduced in the late 2010s; exact initial operational date not publicly established
Users / Operators	Germany, Ukraine, Latvia, Slovenia and Estonia
Notable Deployments	Ukrainian air defense operations, including integration with IRIS-T SLM
Successor / Predecessor	No formally announced direct successor; developed within HENSOLDT's ground-based radar portfolio

7. Export / Compliance Data

Export Availability	Exportable subject to German government approval
ITAR / MTCR Status	Not established as a blanket ITAR- or MTCR-controlled system; applicable export controls depend on configuration and components
Cost Estimate	No confirmed individual unit price

PROS

Long instrumented detection range of up to 250 km.
Tracks more than 1,500 targets simultaneously.
GaN-based AESA technology supports rapid target acquisition.
Detects and tracks low-flying and maneuvering threats.
Mobile configuration supports relatively rapid deployment.

CONS

Individual radar acquisition costs are not publicly disclosed.
Detailed power and weight specifications are unavailable.
Performance depends on target radar cross-section and operating conditions.
Requires integration with compatible air defense command networks.
Advanced maintenance and technical support may require manufacturer assistance.

HENSOLDT TRML-4D AESA Air Defense Radar

The HENSOLDT TRML-4D is a mobile, multifunctional air surveillance and target acquisition radar designed to support modern ground-based air defense operations. Developed to detect, track, and classify airborne threats, the system is particularly suited to identifying low-flying aircraft, cruise missiles, helicopters, unmanned aerial vehicles (UAVs), and other maneuvering targets.

The radar uses active electronically scanned array (AESA) technology with gallium nitride (GaN) solid-state transmit and receive modules. It offers an instrumented range of up to 250 kilometers and can track more than 1,500 targets simultaneously. Its published tracking performance includes fighter aircraft at ranges exceeding 120 kilometers and supersonic missiles beyond 60 kilometers.

The TRML-4D also supports target classification, weapon assignment, electronic counter-countermeasures, and continuous airspace surveillance. Its software-defined architecture allows operational functions to be adapted through software changes.

Manufacturer

The TRML-4D is manufactured by HENSOLDT in Germany. The radar was developed for modern ground-based air defense networks and is closely associated with Diehl Defence’s IRIS-T SLM surface-to-air missile system.

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Its mobile configuration uses a 20-foot ISO container arrangement, allowing transportation on suitable military trucks and other transport platforms.

Speed and Range

As a ground-based radar, the TRML-4D has no aircraft speed or endurance rating. Its principal performance figure is its 250 km instrumented detection range, with a maximum instrumented altitude of approximately 30 km. Actual detection and tracking distances depend on target characteristics and operating conditions.

Cost/Price

HENSOLDT has not published a standard unit price for the TRML-4D. Procurement costs depend on configuration, integration, training, maintenance, and support requirements. Contract values should not be treated as individual radar prices.

FAQs

What is the maximum range of the TRML-4D radar?

The TRML-4D has an instrumented range of up to 250 kilometers. Actual detection range depends on the target’s size, altitude, radar signature, and environmental conditions.

How many targets can the TRML-4D track simultaneously?

The radar can track more than 1,500 targets simultaneously, supporting air defense operations in high-density threat environments.

Is the TRML-4D an AESA radar?

Yes. It uses an active electronically scanned array with gallium nitride (GaN) solid-state technology and digital beamforming.

Which countries operate the TRML-4D radar?

Publicly reported customers and operators include Germany, Ukraine, Latvia, Slovenia, and Estonia.

Is the TRML-4D compatible with the IRIS-T SLM system?

Yes. It is integrated with Diehl Defence’s IRIS-T SLM medium-range air defense system, providing surveillance and target information for missile engagements.

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