The primary purpose of the SDS satellites is to relay imagery from low-flying reconnaissance satellites, notably the Keyhole optic reconnaissance and Lacrosse/Onyx radar reconnaissance satellites to ground stations in the United States.
operating system | Super Nintendo Entertainment System | Nintendo Entertainment System | satellite | Android (operating system) | Sirius Satellite Radio | Global Positioning System | Solar System | X Window System | Korean Broadcasting System | Digital data | Array data structure | System of a Down | Domain Name System | Seoul Broadcasting System | North Carolina Community College System | Mutual Broadcasting System | Bulletin board system | system | Electronic Data Systems | XM Satellite Radio | Turner Broadcasting System | Program and System Information Protocol | Geographic information system | communications satellite | Ubuntu (operating system) | Tokyo Broadcasting System | Federal Reserve System | Data General | Youth system |