PoSAT-1, the first Portuguese satellite, was launched into orbit on September 26, 1993, from the Kourou Space Centre, French Guiana.
The PoSAT project was developed by a consortium of universities and companies in Portugal and a team of seven Portuguese engineers worked alongside Surrey Satellite Technology Ltd employees on the build of the microsatellite.
PoSAT-1 was an earth observation and technology demonstration mission. It carried two imagers, one with a wide field of view with 2 km ground resolution, the second narrow field imager provided 200m ground resolution. It also carried a cosmic ray experiment and a digital signal processing experiment. PoSAT-1 stopped transmitting in 2006.