OVERVIEW: Advanced Offensive Electronic Countermeasures (OECM) systems are designed to actively degrade, deceive, or deny enemy radar and communications through powerful jamming and electronic attack techniques. They play a critical role in electronic warfare by enabling aircraft and ships to penetrate defended airspace or suppress enemy sensors.

GENERAL DESCRIPTION: These advanced OECM systems operate across wide frequency ranges and incorporate digital radio frequency memory (DRFM), adaptive beamforming, and real-time threat libraries to deliver precision jamming, deceptive countermeasures, and electronic attack. They are used to blind or mislead enemy fire control, surveillance, and acquisition radars, as well as disrupt communications links. Platforms include aircraft (both dedicated EW platforms and multirole fighters), surface ships, and ground vehicles. Integration with RWRs, ESM, and ECM suites allows dynamic and coordinated responses to electronic threats.

ROLE SUMMARY:
Category: Electronic Warfare / Offensive Electronic Countermeasures
Primary Use: Disruption and deception of enemy radar and communications
Function: Active electronic jamming and signal manipulation
Platform: Fighter aircraft, EW aircraft, naval vessels, ground EW units
Integration: Paired with RWR, ESM, and defensive ECM systems for full-spectrum EW

See Specific information under [Sensors/EW] and [Properties] sections.

SOURCE:
https://apps.dtic.mil/sti/pdfs/ADA595279.pdf
NATO EW Handbook (unclassified excerpts)