BackForward Satellite Programme: Tianmu Beidou radio occultation programme. 

Programme details
Programme description
  • Constellation of satellites for radio occultation sounding using the BeiDou system.
  • Commercial programme implemented by CASIC’s subsidiary Xiyong Microelectronics Park.
  • The orbit heights, around 520 km, and inclinations 97.4, are determined by the launch opportunity.
  • By end of 2023 26000 profiles/day
  • By end of 2025 80000 profiles/day
Data circulation
Agencies CASIC
Programme lifetime 2023 - 2040
Associated satellites and instruments

Note: red tag => no longer operational , green tag => operational , blue tag => planned