Patria CATCHR introduced at EW Live in Tartu.

Patria showcases its new high-performance ESM (Electronic Support Measures) surveillance system Patria CATCHR at the EW Live exhibition in Tartu today – September 23, 2025. The system delivers real-time situational awareness by cutting through the noise — enabling fast, informed actions and precision countermeasures.

“In today’s crowded electromagnetic battlespace, even the faintest signal can reveal a critical threat. Staying ahead in intelligence and surveillance requires early, accurate detection and the ability to distinguish targets from a dense and dynamic signal environment. Vulnerable active sensors must be complemented with covert and agile passive sensors to ensure mission survivability. We are proud to launch this new innovative product in this area, Patria CATCHR”, says Mikko Leino, Executive Vice President of Patria’s Defence and Weapon Systems business area.

Patria CATCHR delivers the full capabilities of a high-performance ESM system combined with advanced signal intelligence features. It intercepts, geolocates, and tracks radar emitters generating a recognised situational picture, while allowing operators to explore detailed signal patterns. When deployed as a distributed sensor network, the system provides passive, wide-area surveillance that remains invisible to adversaries – offering superior situational awareness and enabling rapid countermeasures against evolving threats.

Patria CATCHR is designed to perform under pressure. Built on advanced signal processing algorithms, it sorts through dense electromagnetic traffic, detects and classifies even the weakest radar emissions, geolocates threats with high precision, and operates completely passively, without revealing its own position.

Use of CATCHR –

Networked tactical surveillance: Enables wide-area situational awareness across national territory or large operational zones through distributed, passive sensor stations.

Strategic ELINT missions: Supports long-range signal intelligence gathering and validation of ELINT databases for improved threat analysis and mission planning.

Covert deployment in high-risk areas: Enables undetectable intelligence collection in contested environments, complementing active sensors without revealing presence.

Border and coastal monitoring: Provide continuous surveillance and emitter tracking in critical regions using fixed, transportable, or vehicle-mounted installations.

Ground-based air defence support: Enhances early warning and threat classification as part of integrated air defence sensor networks.

Electronic warfare support: Strengthens EW operations by enabling precise emitter detection for effective jamming and deception.

Key operational advantages –

Long-range target tracking: Provides reliable detection and continuous tracking of emitters from extended distances, enabling early threat recognition.

Precision in complex signal environments: Accurately separates and tracks fast-maneuvering targets in dense signal conditions, including modern low-probability-of-intercept (LPI) waveforms.

Unknown emitter classification: Detects and characterizes previously unknown signals, expanding situational awareness beyond predefined threat libraries.

Multi-level situational awareness: Supports both detached operations and full-network situational awareness. Offers versatile interfaces for integration into higher-level C2 and ISR systems.

Advanced operator interface: Features mission replay and detailed signal analysis from emitter activity timeline.

Technical specifications –

Performance:

• Frequency range: instantaneously 2–18 GHz
• System sensitivity: down to -94 dBmi
• Direction finding accuracy: better than 0.35°
• Signal recording and analysis: real-time spectrum monitoring and post-mission EOB analysis, replay, and detailed pulse analysis (PRI, PD, RF, modulation, scan pattern)

Main features:

• Situational awareness map (EOB)
• Track activity dashboard
• Sensor-level tactical ESM and spectrum monitoring displays
• Multi-level recording and post-mission analysis
• Technical signal analysis tools (ELINT)
• C2, database and mission management tools

System configuration:

Sensor: Interferometer Antenna Unit (1–4 units, 90° ea.), Power Distribution Unit, ESM Sensor Server Unit, 100 GbE Switch

Sensor network: C2 Server, which operates within standalone sensors or in coordinated networked

configurations. Client application for operating and monitoring the system.

Interfaces: STANAG 4658 CESMO and STANAG 4676 NITS for integration with C2, ISR, and EW systems

Options: turn-key sensor site solutions, integration to transportable platforms and vehicles, training, life-cycle support services

Hardware characteristics:

• Interferometer antenna unit: 800 x 450 x 350 mm, 45 kg, 460 W, mast mount.
• ESM sensor server unit: 483 x 180 x 420 mm, 18 kg, < 500 W, 19” rack mount 4U.

Team Maverick