Constellation of micro-satellites (20 planned) for radio occultation sounding.Commercial programme implemented by PlanetiQ of Golden, CO, USA. Data possibly bought by NOAA.The platforms are actively stabilised over 3 axes.The design life time is 3 years for individual satellites, undetermined for the full constellation.The replacement policy is based on launching new satellite(s) before the status of the constellation is unacceptably degraded, taking advantage of launch opportunities.The orbit heights, ranging around 600 km, possibly sunsynchronous, are determined by the launch opportunity.See detailed description at https://directory.eoportal.org/web/eoportal/satellite-missions/g/gnomes
Note: red tag => no longer operational , green tag => operational , blue tag => planned
Satellite Programme:
GNSS Navigation and Occultation Measurement Satellites 