Glossary

D

DAAC Distributed Active Archive Center

DARPA See ARPA

DARS Digital Audio Radio Services

dB Decibel

DBS Direct Broadcast Satellite

DC-X Delta Clipper-Experimental

DC-XA Delta Clipper-Experimental Advanced

DFRC Dryden Flight Research Center (NASA)

DMSP Defense Meteorological Satellite Program-DoD's polar orbiting weather satellite system

DoC Department of Commerce

DoD Department of Defense

DoE Department of Energy

DoI Department of the Interior

DOLILU Day-of-Launch I-Load Update (System)

DoS Department of State

DoT Department of Transportation

drag The force, produced by friction, that impedes a body's motion through a fluid

DSCS Defense Satellite Communication System

DSP Defense Support Program