page_title: Praetorian DASS
section_title: ECM
hierarchical_section_title: Praetorian DASS / Technology / ECM
caption_attribution_description: Magyar: Eurofighter Typhoon a zeltwegi Airpower 2013 statikus során. Gyártó: Eurofighter GmbH.
context_page_description: The Leonardo's Praetorian DASS is an integral part of Eurofighter Typhoon defensive Aid Sub-System providing threat assessment, aircraft protection and support measures in extremely hostile and severe environments. As the DASS is fully integrated, it doesn’t require additional pods that take up weapon stations or would influence the aircraft’s aerodynamic performance. In addition the modular nature of the DASS simplifies future upgrades and allows each partner nation or export customer the option to tailor the DASS to their individual needs.
context_section_description: The Eurofighter Typhoon features an internal electronic countermeasures system (ECM) that uses a digital radio frequency memory (DRFM) and a digital frequency techniques generator to jam multiple airborne and ground-based radar systems at the same time and at long ranges. Each transmitter and receiver modules (T/R) consists of Vivaldi antennas that can passively locate emitters. The antennas are located in front of the wing tip pods, and another at the rear end of the left pod thus ensuring a 360 ° coverage. The T/R modules of AESAS are GaAs-MMIC based and operating in the 6–18 GHz frequency range. The output per module is 27 dBm (0.5 W), before being amplified by 20 dB (100 times), resulting in 50 Watt radiation performance. It is possible that the Cross Eye (X-Eye) system developed by Elettronica will be retrofitted by inserting a second antenna in the right-wing pod. As part of the Phase 1 Enhancement (P1E), Typhoons received new antennas, extending the frequency range and increasing the power and improved DRFM- and ECM techniques.
caption: ECM wingtip pod
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