Definition of "signals intelligence" []

• Intelligence information gathered from communications intelligence or electronics intelligence or telemetry intelligence (noun)

WordNet. Princeton University. 2010.

• "On December 10, the U.S. National Security Agency, which sucks up signals intelligence around the world, picked up an important intercept from Tora Bora: “Father bin Laden is trying to break through the siege line.”"
• "There he was introduced to a team of half a dozen Delta Force operators and signals intelligence “collectors” led by Dalton Fury also a pseudonym."
• "Captain Thomas Jackson — he of the general contempt for cryptographers and signals intelligence — was not present in the War Room that night."