SDM
[1] Space/Sequency Division Multiplexing[2] Sub-rate Data Multiplexer
[3] Shut Down Mode (->""IEEE" Standard Dictionary")
[4] Standardization Design Memorandum (->""IEEE" Standard Dictionary")
[5] Statistical Delta Modulation (->""IEEE" Standard Dictionary")
[6] Shuttle Data Management (->""NASA" Acronym List")
[7] System Definition Manual (->""NASA" Acronym List")
[8] San Diego-Brown Field, CA, USA -internationale Fughafen-Kennung