CDAA may refer to:
*
Cave Divers Association of Australia Inc. - an association that represents Australian recreational cave divers.
*
Circularly Disposed Antenna Array
The Wullenweber (the original name introduced by Dr. Hans Rindfleisch was Wullenwever) is a type of Circularly Disposed Antenna Array (CDAA) sometimes referred to as a Circularly Disposed Dipole Array (CDDA). It is a large circular antenna arra ...
- a large circular antenna used by the military
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