BackForward Satellite: Sentinel-3B 

Satellite details
Acronym Sentinel-3B
Full name Sentinel-3B
Satellite Description
  • 2nd flight unit of the Sentinel-3 programme.
  • Main mission: ocean and land observation.
  • Substantial contribution to Solid Earth (topography).
Mass at launch 1250 kg Dry mass 1150 kg
Power 2300 W
Data access link no link provided
Data access information
  • Data available from centres of the Payload Data Ground Segment (PDGS).
  • Product delivery timeliness may be:
    • Near-Real-Time (NRT): < 3 h from sensing
    • Short Time Critical (STC): < 48 h from sensing
    • Non-Time Critical (NTC): < 1 month from sensing.
  • Marine products are distributed by EUMETSAT by EUMETCast.
Orbit Sunsynchronous orbit Altitude 814.5 km
ECT 10:00 desc


Status Operational
Details on Status
(as available)
Launch 25 Apr 2018 EOL ≥2025
Last update: 2018-10-10
Associated satellite programme and related satellites

Note: red tag: no longer operational , green tag: operational , blue tag : future

Satellite Payload

All known Instruments flying on Sentinel-3B

Acronym Full name
DORIS Doppler Orbitography and Radiopositioning Integrated by Satellite
GPS GPS Receiver
LRR Laser Retro-Reflector
MWR Micro-Wave Radiometer
OLCI Ocean and Land Colour Imager
SLSTR Sea and Land Surface Temperature Radiometer
SRAL Synthetic aperture Radar Altimeter
Show instrument status and calibration
Telecommunication frequency or microwave sensing channel information Show expert details
Service Dir or Mode Frequency Emission designator Bandwidth Polarisation D/A Data rate or Baseband Comments
DORIS E-S 401.25 MHz 23K0G1D 23  kHz RHCP D   Precise positioning by DORIS
DORIS E-S 2036.25 MHz 95K0G1D 95  kHz RHCP D   Precise positioning by DORIS
Altimeter active 5300 MHz N/R  kHz TBD D   SRAL C-band
Altimeter active 13580 MHz N/R  kHz TBD D   SRAL Ku-band
Altimeter active 13580 MHz N/R  kHz TBD D   SRAL Ku-band