BackForward Satellite: HY-2A 

Satellite details
Acronym HY-2A
Full name Hai Yang 2A
WIGOS Station Identifier ---
Satellite Description
  • 1st flight unit of the HY-2 programme.
  • Main mission: ocean observation.
Mass at launch 1500 kg Dry mass
Data access link
Data access information
Orbit Sunsynchronous orbit Altitude 975 km
ECT 06:00 desc


Space agency NSOASCAST
Status Presumably inactive
Details on Status
(as available)

All instruments degraded since Nov 2020

Launch 16 Aug 2011 EOL 2022
Last update: 2023-12-11
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 HY-2A

Acronym Full name
DORIS Doppler Orbitography and Radiopositioning Integrated by Satellite
LRA Laser Retroreflector Array
MWRI Microwave Radiometer Imager
HSCAT HY Scatterometer
CMR Calibration Microwave Radiometer
ALT Radar Altimeter
Show instrument status and calibration
Satellite frequencies for Earth Observation, data transfer and platform communications and control
Frequencies for satellite management
Service Direction Frequency (MHz) Emission designator Bandwidth (kHz) Polarisation D/A Data rate (kbps) or Baseband (kHz) 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
Earth observation MW frequencies
Service Sensing mode Frequency (GHz) Bandwidth (MHz) Polarisation Comments
MWI passive 6.6 GHz 350 MHz H&V Window channel
MWI passive 10.7 GHz 250 MHz H&V Window channel
MWI passive 18.7 GHz 250 MHz H&V Window channel
MWI passive 23.8 GHz 400 MHz V Water vapour channel
MWI passive 37 GHz 1000 MHz H&V Window channel
ALT active 5 GHz - 5.25 GHz 0 MHz - C-band altimeter
ALT active 14 GHz - 13.58 GHz 0 MHz - Ku-band altimeter
SCAT active 13 GHz - 13.256 GHz 0 MHz - Ku-band scatterometer