ECM, electronic countermeasures - electronic warfare undertaken to prevent or reduce an enemy's effective use of the electromagnetic spectrum

electronic manipulative deception, manipulative electronic deception - actions to eliminate revealing telltale indicators that could be used by the enemy (or to convey misleading indicators)

electronic simulative deception, simulative electronic deception - actions to represent friendly notional or actual capabilities to mislead hostile forces

electronic imitative deception, imitative electronic deception - the introduction of electromagnetic energy into enemy systems that imitates enemy emissions