(electromagnetic intelligence) The interception and analysis of electromagnetic signals of other countries including radar, radio, telephony, and microwave transmissions. It can be carried out effectively using satellites. ELINT is a sub-category of SIGINT (signals intelligence)... Found on http://www.daviddarling.info/encyclopedia/E/ELINT.html
the gathering of military or other intelligence through the monitoring of electronic signals other than voice communications, as satellite transmissions, rocket telemetry, and radar. · sigint. Cf. comint, humint, sigint. Found on https://www.infoplease.com/dictionary/elint