ARIS

Patria ARIS is an electronic intelligence system designed to work in dense and low-probability-of-intercept radar signal environments across the air, sea and ground domains. It combines wideband spectrum surveillance with signal processing and analysis in a single platform, supporting detection of unknown emitters, detailed waveform characterisation and the continuous build-out of validated emitter databases. Patria describes three use cases: strategic ELINT for long-term national signal collection, operational and tactical ELINT for real-time threat recognition and cueing of electronic attack, and technical ELINT for high-precision measurement of radar parameters and waveforms. Published performance figures are a frequency range of 20 MHz to 40 GHz with options, an instantaneous bandwidth of three 500 MHz channels with options, and at least two hours of full-band raw I/Q signal recording and replay. The sensor segment comprises a microwave antenna system, a V/UHF antenna system, an ELINT receiver unit and an ELINT sensor server unit, with a choice of high-gain and spinning direction-finding antennas and analogue front-end and filtering options. The mast-mounted ELINT receiver unit measures 315 by 155 by 412 mm, weighs 16 kg and draws 280 W; the 4U rack-mounted ELINT sensor server unit measures 176 by 430 by 540 mm, weighs 17 kg and draws under 500 W. No single dimension or weight describes a complete ARIS installation, so none is recorded in the structured fields. Sensors run standalone or in a coordinated network behind a C2 server, with optional offline analysis servers, and integrate with C2, ISR and EW systems over STANAG 4658 CESMO and STANAG 4676 NITS. Software functions span search and monitoring with spectrum and waterfall displays, raw I/Q and PDW recording and export, monopulse direction finding, spectrogram and modulation analysis, real-time pulse detection and PDW analysis, automatic identification with a map-based electronic order of battle display, measurement reporting, emitter database management, preset autonomous surveillance tasks and networked sensor command and control. Patria offers turn-key sensor sites and integration onto fixed tower, transportable shelter, vehicle, air and sea platforms.