Editing Signals intelligence (section)

==Technical definitions==
[[File:Har Avital.jpg|thumb|[[Unit 8200]] (the SIGINT unit of [[Intelligence Corps (Israel)|the Israeli Intelligence Corps]]) base on [[Mount Avital]], [[Golan Heights]]]]
[[File:A52 Oste.jpg|thumb|A52 ''Oste'', an [[Oste class fleet service ship|Oste class]] [[#Electronic signals intelligence|ELINT]] (Electronic signals intelligence) and [[reconnaissance]] ship, of the [[German Navy]]]]
[[File:20120715 Grondstation Nationale SIGINT Organisatie (NSO) Burum Fr NL.jpg|thumb|Satellite ground station of the Dutch [[Nationale SIGINT Organisatie]] (NSO) (2012)]]

The [[United States Department of Defense]] has defined the term "signals intelligence" as:
# A category of intelligence comprising either individually or in combination all communications intelligence (COMINT), electronic intelligence (ELINT), and [[foreign instrumentation signals intelligence]] (FISINT), however transmitted.
# Intelligence derived from communications, electronic, and foreign instrumentation signals.<ref name=JP1-02>{{cite web|last=US Department of Defense|author-link=U.S. Department of Defense|title=Joint Publication 1-02 Department of Defense Dictionary of Military and Associated Terms|date=12 July 2007|url=http://www.dtic.mil/doctrine/jel/new_pubs/jp1_02.pdf|access-date=1 October 2007|url-status=dead|archive-url=https://web.archive.org/web/20091108082044/http://www.dtic.mil/doctrine/jel/new_pubs/jp1_02.pdf|archive-date=8 November 2009}}</ref>

Being a broad field, SIGINT has many sub-disciplines. The two main ones are communications intelligence (COMINT) and electronic intelligence (ELINT).