(*) In surveillance, an adjective applied to actions or equipments which emit no energy capable of being detected.
PASSIVE
Meaning of PASSIVE in English
DOD English dictionary of military terms. Английский словарь военных терминов DOD. 2012
(*) In surveillance, an adjective applied to actions or equipments which emit no energy capable of being detected.
DOD English dictionary of military terms. Английский словарь военных терминов DOD. 2012