Five SSUSI instruments have been built by the Applied Physics Laboratory. Three of them are in orbit on DMSP spacecraft, with a soon anticipated launch for F19 early in 2014.
|DMSP Spacecraft||launch date||status|
|F16||October 18, 2003||nominal|
|F17||November 4, 2006||operating on secondary detector|
|F18||October 18, 2009||nominal|
|F19||April 3, 2014||Early Operations|
|F20||N/A||Cancelled by congress|