BackForward Satellite Programme: L-band differential interferometric synthetic aperture radar satellites 

Programme details
Programme description
  • The Ludi-Tance (meaning Land Exploration) are a series of satellites which have L-Band SARs in various orbits.
  • The first 2 satellites launched are in a 600 km sun-synchronous orbit 180 degrees apart. The third satellite is in an inclined geostationary orbit.
  • They provide all-weather, multi-mode, multi-polarization data to provide information about land resources, earthquakes, disaster prevention and mitigation, surveying and mapping, forestry, etc., and to accelerate the formation of rapid response capabilities for major disasters.
Data circulation
Agencies CNSA , CASC
Programme lifetime 2022 - 2040
Associated satellites and instruments

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