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Tianhui 2-01, 2-02 (TH 2-01, 2-02)
Tianhui 2 [CAST]
TH 2 (Tianhui-2 = "Sky drawing") is a Chinese series of earth observation satellites. The TH-2 satellite system is China’s first microwave surveying satellite system based on interferometric synthetic aperture radartechnology, and is also China’s first close range formation satellite system.
The system works in the X-band, with the resolution of 3 m and a solar synchronous orbit of 500 km. It is composed of two identical satellites. It adopts a technical system of satellite formation in differen torbits and a bistatic radar transceiver mode. It can measure the global digital surface models and acquire radar orthophotos in a short time.
The first group of two satellites was launched on 29 April 2019 on a CZ-4B rocket from Taiyuan. A second group was launched on 18 August 2021.
| Nation: | China |
|---|---|
| Type / Application: | Earth observation (SAR) |
| Operator: | |
| Contractors: | |
| Equipment: | |
| Configuration: | |
| Propulsion: | |
| Power: | solar arrays, batteries |
| Lifetime: | |
| Mass: | |
| Orbit: | 506 km × 517 km, 97.4° |
| Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
|---|---|---|---|---|---|---|
| Tianhui 2-01A (TH 2-01A) | 2019-024A | 29.04.2019 | TY LC-9 | CZ-4B | with Tianhui 2-01B | |
| Tianhui 2-01B (TH 2-01B) | 2019-024C | 29.04.2019 | TY LC-9 | CZ-4B | with Tianhui 2-01A | |
| Tianhui 2-02A (TH 2-02A) | 2021-074A | 18.08.2021 | TY LC-9 | CZ-4B | with Tianhui 2-02B | |
| Tianhui 2-02B (TH 2-02B) | 2021-074B | 18.08.2021 | TY LC-9 | CZ-4B | with Tianhui 2-02A |
References:
- Lou Liangsheng, Liu Zhiming, Zhang Hao, Qian Fangming, Huang Yan: TH-2 satellite engineering design and implementation
