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HY 1A, 1B

HY 1 [CAST]

HY 1 (Haiyang = Ocean) is the first operational remote sensing satellite based on the CAST968 bus. The 365 kg box-shaped satellite is three-axis-stabilized and Earth-oriented, with the twin solar wings oriented to the sun. It incorporates an integrated on-board operation management system and has a design life of two years. Its payloads include a 10-band ocean color scanner with a revisit period of 3 days and a 4-band CCD imager with a revisit period of 7 days.

HY-1 can provide real-time observations of China's coastal regions such as the Bohai Sea, the Huanghai Sea, the Donghai Sea, the Naihai Sea and other seacoast regions. Remote sensing data on the rest of the world can be stored in the onboard data storage device for delayed replay.

The main task of HY-1 is to observe sea optical characteristics, chlorophyll concentration, surface temperature, suspended silt charge, soluble organic matter and pollution. It can also be used to observe sea ice, shallow sea terrain, ocean current characteristics and atmospheric aerosol on the sea surface.

HY-1A had been launched by a CZ-4B launch vehicle from Taiyuan Satellite Launch Center on 15 May 2002. An improved HY-1B followed in 2007 on a dedicated CZ-2C (3) launch vehicle.

Nation: China
Type / Application: Oceanograpy
Operator: CAST
Contractors: DFH Satellite Co. Ltd of CAST
Equipment: 10-band ocean color scanner
Configuration: CAST968B Bus
Propulsion:
Power: 2 deployable solar arrays, batteries
Lifetime:
Mass: 360 kg
Orbit: 771 km × 794 km, 98.4 (#1A); 769 km × 795 km, 98.5 (#1B)
Satellite COSPAR Date LS Launch Vehicle Remarks
HY 1A 2002-024A 15.05.2002 TY LC-7 CZ-4B with FY 1D
HY 1B 2007-010A 11.04.2007 TY LC-7 CZ-2C (3)

References:

  • CAST Website
Further HY missions: