REX (Radiation Experiment)
REX (Radiation Experiment) were United States Air Force satellites designed to study scintillation effects of Earth's atmosphere on radio transmissions. REX 2 was also the first spacecraft to successfully employ GPS (Global Positioning System) navigation for full closed-loop attitude control.
|spacecraft||launch date||launch vehicle||launch site||orbit||mass (kg)||size (m)|
|REX 1||Jun 29, 1991||Scout G||Vandenberg||766 × 869 km × 89.6°||85||0.6 × 0.8|
|REX 2||Mar 9, 1996||Pegasus XL||Vandenberg||799 × 835 km × 90.0°||0.6 × 0.8|