| D2D |
Direct-to-Device |
| DA |
Demand Assignment |
| DAA |
Data Access Arrangement |
| DA/TDMA |
Demand Assigned TDMA |
| DAB |
Digital Audio Broadcasting |
| DAC |
Demand Assignment Circuit Establishment |
| DAC |
Digital to Analogue Converter |
| DAD |
Demand Assignment Circuit Disestablishment |
| DAIT |
Demand Assigned International Terminal |
| DAMA |
Demand Assignment Multiple Access |
| DARPA |
Defense Advanced Research Projects Agency |
| DASS |
Data Acquisition and Stimuli Software |
| DASS |
Demand Assignment Signalling System |
| DATE |
Duly Authorised Telecommunications Entity |
| DAVIC |
Digital Audio Visual Council |
| DAVID |
Digital Audio/Video Interactive Decoder |
| dB |
deciBel |
| dBc |
deciBels with respect to centre frequency |
| DBF |
Digital Beamforming |
| dBi |
deciBels with respect to an isotropic antenna |
| dBm |
deciBels with respect to 1mW |
| DBR |
Data Broadcast Receiver |
| DBS |
Direct Broadcasting by Satellite |
| DBTR |
Digital Bit Timing Recovery |
| dBW |
Decibels with respect to 1W |
| DC |
Direct Current |
| D/C |
Down Converter |
| DCA |
Defense Communications Agency |
| DCE |
Data Circuit Terminating Equipment |
| DCE |
Data Communications Equipment |
| DCE |
Despun Control Electronics |
| DCLA |
Design Coupled Loads Analysis |
| DCME |
Digital Circuit Multiplication Equipment |
| DCN |
Data Communication Network |
| DCN |
Document Change Notice |
| DCP |
Data Collection Platform |
| DCPSK |
Differentially Coherent Phase Shift Keying |
| DCR |
Document Change Record |
| DCR |
Document Change Request |
| DCRT |
Data Collection Receive Terminal |
| DCS |
Data Collection System |
| DCS |
Direct Couple System |
| DC/TDMA |
Demand Controlled TDMA |
| DCU |
Display and Control Unit |
| DD/C |
Dual Downconverter |
| DDC |
Digital Down Converter |
| DDD |
Detailed Design Document |
| DDI |
Direct Digital Interface |
| DDR |
Detailed Desind Review |
| DDS |
Dataphone Digital Service |
| DDS |
Digital Data Service |
| DDS |
Digital Data System |
| DDS |
Direct Digital Synthesis |
| DDS |
Domestic Data Service |
| DEC |
Declination |
| DEMOD |
Demodulator |
| DEMUX |
Demultiplexer |
| DES |
Data Encryption Standard |
| DES |
Digital Encryption Standard |
| DET |
Detector |
| DEV |
Deviation |
| DFE |
Data Front End |
| DFS |
Deutsche Fernmelde Satellit |
| DGPS |
Differential GPS |
| DIOS |
Digital In Band Open Loop Synchronisation |
| DiSEqC |
Digital Satellite Equipment Control |
| DL |
Downlink |
| D/L |
Downlink |
| DLA |
Driver/Limiter Amplifier |
| DLC |
Dynamic Load Control |
| DLCI |
Data Link Connection Identifier |
| DLL |
Downline Loading |
| DM |
Delta Modulation |
| DMA |
Direct Memory Access |
| D-MAC |
Type D Multiplexed Analogue Components |
| D2-MAC |
Type D2 Multiplexed Analogue Components |
| DMB |
Digital Multimedia Broadcasting |
| DM/PSK |
Delta Modulation / Phase Shift Keyed |
| DMS |
Direct Media Service |
| DMUX |
Demultiplexer |
| DNI |
Digital Non-interpolated Interface |
| DNR |
Dynamic Noise Reduction |
| DNS |
Domain Name System |
| DoC |
Declaration of Conformity |
| DoD |
Department of Defense |
| DOMSAT |
Domestic Satellite System |
| DORSY |
Dropout Reduction System |
| DP |
Dial Pulse |
| DPA |
Destructive Physical Analysis |
| DPCM |
Differential Pulse Code Modulation |
| DPD |
Dynamic Pre Distortion |
| DPSK |
Differential Phase Shift Keyed |
| DPU |
Data Processing Unit |
| DPU |
Digital Processing Unit |
| DQPSK |
Differential Quadrature Phase Shift Keyed |
| DR |
Dynamic Range |
| DRB |
Delivery Review Board |
| DRD |
Document Requirements Description |
| DRL |
Document Requirements List |
| DRT |
Data Recording Terminal |
| DRO |
Dielectric Resonator Oscillator |
| DS |
Direct Sequence |
| D/S |
Data/Speech |
| DSB |
Double Sideband |
| DSB-SC-AM |
Double Sideband Suppressed Carrier Amplitude Modulation |
| DSB-SC-ASK |
Double Sideband suppressed carrier Amplitude Shift Keyed |
| DSF |
Dielectric Space Frame |
| DSG |
Deep Space Gateway |
| DSH |
Deep Space Habitat |
| DSH |
Dual Seizure Handling |
| DSI |
Digital Speech Interpolation |
| DSIF |
Deep Space Instrumentation Facility |
| DSL |
Digital Subscriber Line |
| DSN |
Deep Space Network |
| DSNG |
Digital Satellite News Gathering |
| DSP |
Digital Signal Processor |
| DSP |
Digital Signal Processing |
| DSR |
Digital Satellite Radio |
| DSRM |
DAVIC System Reference Model |
| DSSS |
Direct Sequence Spread Spectrum |
| DST |
Direct Sounding Transmission |
| DTE |
Data Terminating Equipment |
| DTF |
Dynamic Traffic Filter |
| DTH |
Direct To Home Broadcasting |
| DTI |
Data Transfer Interface |
| DTMF |
Dual Tone Multi Frequency |
| DTT |
Digital Terrestrial Television |
| DUS |
Data Utilisation Stations |
| DUT |
Device Under Test |
| DVB |
Digital Video Broadcasting |
| DVB-H |
Digital Video Broadcasting – Handheld |
| DVB-IPDC |
Digital Video Broadcasting – IP DataCasting |
| DVB-RCS |
Digital Video Broadcasting - Return Channel by Satellite |
| DVB-RCS NG |
DVB-RCS Next Generation |
| DVT |
Design Verification Test |
| DVB-S |
Digital Video Broadcast by Satellite |
| DVB-S2 |
Digital Video Broadcasting – Satellite version 2 |
| DVB-SH |
Digital Video Broadcasting – Satellite to Handheld |
| DW |
Data Word |
| DX |
Duplex |
