Operational electronic intelligence

Overview
Operational electronic intelligence (OpELINT) concentrates on locating specific ELINT targets and determining the operational patterns of the systems. These results are commonly called Electronic Order of Battle (EOB). OpELINT also provides threat assessments, often referred to as "tactical ELINT." OpELINT intelligence products support military operational planners and tactical military commanders on the battlefield.

Source

 * Richard L. Bernard, "Electronic Intelligence (ELINT) at NSA" (2009) (full-text).