electronic countermeasures

English Thesaurus

1. electronic warfare undertaken to prevent or reduce an enemy's effective use of the electromagnetic spectrum (noun.act)

hypernym	:	electronic warfare, ew,
definition	:	military action involving the use of electromagnetic energy to determine or exploit or reduce or prevent hostile use of the electromagnetic spectrum (noun.act)

hyponym	:	electronic deception,
definition	:	the deliberate use of electromagnetic energy in a manner intended to convey misleading information (noun.act)

hyponym	:	electronic jamming, jam, jamming,
definition	:	deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems (noun.act)