Haiyang 2C, 2D (HY 2C, 2D)

HY 2D [CAST]

HY 2 (Haiyang = Ocean) is a chinese series of Earth observation satellites focused on the marine dynamic environment.

The objective of the second batch of HY-2 satellites is to monitor the dynamic ocean environment with microwave sensors to detect sea surface wind field, sea surface height and sea surface temperature. The instrument suit consists of an altimeter (dual-frequency in Ku and C-bands), and a scatterometer.

These satellites are modified versions of the earlier HY 2A and 2B spacecraft. These satellites omit the microwave radiometer imager and feature two solar arrays.

They carry following instruments:

  • ALT (Radar Altimeter)
  • CMR (Calibration Microwave Radiometer)
  • DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite), provided by CNES
  • HSCAT (HY Scatterometer)
  • LRA (Laser Retroreflector Array)

HY 2C was launched in September 2020 on a CZ-4B launch vehicle from the Jiuquan Satellite Launch Center.

HY 2D followed in May 2021 also on a CZ-4B launch vehicle from the Jiuquan Satellite Launch Center.

Nation: China
Type / Application: Oceanography
Operator: CAST
Contractors:
Equipment: dual-frequency altimeter (Ku and C-bands), microwave imager
Configuration:
Propulsion:
Power: 2 deployable solar arrays, batteries
Lifetime:
Mass: 1575 kg (#2C)
Orbit:
Satellite COSPAR Date LS Launch Vehicle Remarks
Haiyang 2C (HY 2C) 2020-066A 21.09.2020 Jq LC-43/94 CZ-4B
Haiyang 2D (HY 2D) 2021-043A 19.05.2021 Jq LC-43/94 CZ-4B
Haiyang 2E (HY 2E) 2026-149A 01.07.2026 Jq LC-43/94 CZ-4B
Haiyang 2F (HY 2F) - 2026 Jq LC-43/94 CZ-4B
Haiyang 2G (HY 2G) - 2027 Jq LC-43/94 CZ-4B

Launch Sites:

  • Jq =   Jiuquan Space Center, Inner Mongolia, China   China

References:

  • CAST Website

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