What does DF mean in NASA?

This page is about the meanings of the acronym/abbreviation/shorthand DF in the Governmental field in general and in the NASA terminology in particular.

Direction Finding

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What does DF mean?

Direction finding
Direction finding refers to the establishment of the direction from which a received signal was transmitted. This can refer to radio or other forms of wireless communication. By combining the direction information from two or more suitably spaced receivers, the source of a transmission may be located in space via triangulation. Radio direction finding is used in the navigation of ships and aircraft, to locate emergency transmitters for search and rescue, for tracking wildlife, and to locate illegal or interfering transmitters.

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"DF." Abbreviations.com. STANDS4 LLC, 2016. Web. 28 Sep. 2016. <http://www.abbreviations.com/term/560871>.