Please make a donation to support Gunter's Space Page.
Thank you very much for visiting Gunter's Space Page. I hope that this site is useful and informative for you.
If you appreciate the information provided on this site, please consider supporting my work by making a simple and secure donation via PayPal. Please help to run the website and keep everything free of charge. Thank you very much.

Tianhui 1-01, 1-02, 1-03, 1-04 (TH 1-01, 1-02, 1-03, 1-04)

Tianhui 1-01 [CAST]

TH 1 (Tianhui-1 = "Sky drawing") is a Chinese stereo-topographic mapping satellite operated by the People’s Liberation Army (PLA).

The satellites are built by the Hangtian Dongfanghong Weixing Corporation and the China Aerospace Science and Technology Corporation and the Chinese Academy of Space Technology (CAST). The satellites operate on a 500 km circular sun synchronous orbit. Electrical power is provided by two deployable solar panels that is stored on onboard batteries.

They are equipped with a three-dimensional survey camera and a CCD camera with a ground resolution of 5 meters, spectral region of 0.51 µm to 0.69 µm and with a camera angle of 25 degrees. Also on board is a multi-spectral camera with a ground resolution of 10 meters operating in four spectral bands of 0.43 µm to 0.52 µm, 0.52 µm to 0.61 µm, 0.61 µm to 0.69 µm, and 0.76 µm to 0.90 µm. The swath width of the cameras is 60 kilometers wide.

The Tianhui-1 satellites are part of the Ziyuan program that cover different civil and military earth observation as well as remote sensing programs. The ZY-1 program is focused on Earth resources and looks to have two distinct military and civil branches (this one being operated together with Brazil). These satellites are operated jointly by the Center for Earth Operation and Digital Earth (CEODE) and the Brazilian INPE (Instituto Nacional de Pesquisas Espaciais, National Institute of Space Research). The ZY-2 program are reportedly used for aerial surveillance and are operated by the People’s Liberation Army (PLA). The ZY-3 series are used for stereo mapping and are operated by the State Bureau of Surveying and Mapping. There have also been indications that the development of Tianhui-1 program was merged with the Ziyuan-3 project planned for launch in 2011.

Nation: China
Type / Application: Earth observation
Operator: PLA
Contractors: HDWC, CAST
Power: 2 deployable solar arrays, batteries
Orbit: 492 km × 504 km, 97.35° (#1A); 490 km × 506 km, 97.37° (#1B); 489 km × 500 km, 97.36° (#1C)
Satellite COSPAR Date LS Launch Vehicle Remarks
Tianhui 1-01 (TH 1-01) 2010-040A 24.08.2010 Jq LC-43/94 CZ-2D (2)
Tianhui 1-02 (TH 1-02) 2012-020A 06.05.2012 Jq LC-43/94 CZ-2D (2)
Tianhui 1-03 (TH 1-03) 2015-061A 26.10.2015 Jq LC-43/94 CZ-2D (2)
Tianhui 1-04 (TH 1-04) 2021-067A 29.07.2021 Jq LC-43/94 CZ-2D (2)

Cite this page: