China–Brazil Earth Resources Satellite 2B (CBERS-2B), also known as Ziyuan 1-2B, was a remote sensing satellite operated as part of the China–Brazil Earth Resources Satellite program between the Chinese Center for Resources Satellite Data and Application and Brazilian National Institute for Space Research.[1] The third CBERS satellite to fly, it was launched by China in 2007 to replace CBERS-2.[2]
 | |
| Mission type | Remote sensing |
|---|---|
| Operator | CNSA / INPE[1] |
| COSPAR ID | 2007-042A |
| SATCAT no. | 32062 |
| Mission duration | 2 years (planned) 2 years, 7 months and 20 days (achieved) |
| Spacecraft properties | |
| Spacecraft type | CBERS |
| Bus | Phoenix-Eye 1[1] |
| Manufacturer | CAST |
| Launch mass | 1450 kg |
| Dimensions | 1.8 x 2.0 x 2.2 m |
| Power | 1100 watts |
| Start of mission | |
| Launch date | 19 September 2007, 03:26:13 UTC[2] |
| Rocket | Long March 4B |
| Launch site | Taiyuan Satellite Launch Center, LC-7 |
| Contractor | SAST |
| End of mission | |
| Last contact | 10 May 2010 |
| Orbital parameters | |
| Reference system | Geocentric orbit[3] |
| Regime | Sun-synchronous orbit |
| Perigee altitude | 773 km |
| Apogee altitude | 774 km |
| Inclination | 98.60° |
| Period | 100.30 minutes |
| Epoch | 19 September 2007 |
| |
Spacecraft
editCBERS-2B was a 1,450-kilogram (3,200-pound) spacecraft built by the China Academy of Space Technology and based on the Phoenix-Eye 1 satellite bus.[1] The spacecraft was powered by a single solar array, which provided 1100 watts of electricity for the satellite's systems.[4][5] The 1.8 m x 2.0 m x 2.2 m, triaxially-stabilized spacecraft carries a low 20 m resolution, and a higher 2.5 m resolution camera. The data help in crop estimation, urban planning, water resource management, and military intelligence.[6]
The instrument suite aboard the CBERS-2B spacecraft consisted of three systems:
- Wide Field Imager (WFI) produced visible-light to near-infrared images with a resolution of 260 meters (850 feet) and a swath width of 890 kilometers (550 miles).
- High-resolution CCD camera was used for multispectral imaging at a resolution of 20 m (66 ft) with a swath width of 113 km (70 mi).
- High Resolution Camera (HRC) was a panchromatic imager with a resolution of 2.5 m (8 ft 2 in) and a swath width of 27 km (17 mi).[7]
The HRC replaced the lower-resolution Infrared Multispectral Scanner instrument flown on earlier CBERS satellites.[1]
Launch
editA Long March 4B carrier rocket, operated by the China Academy of Launch Vehicle Technology (CALT), was used to launch CBERS-2B. The launch took place at 03:26:13 UTC on 19 September 2007, using Launch Complex 7 at the Taiyuan Satellite Launch Center (TLSC).[2] The satellite was successfully placed into a Sun-synchronous orbit.[8]
Last contact
editThe CBERS-2B spacecraft suffered a power system failure on 10 May 2010, leaving it unable to continue operations. It remains in orbit.[3]
References
edit
- ^ a b c d e Krebs, Gunter. "CBERS 1, 2, 2B / ZY 1A, 1B, 1B2". Gunter's Space Page. Retrieved 1 December 2013.
- ^ a b c McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 1 December 2013.
- ^ a b "CBERS 2B Satellite details 2007-042A NORAD 32062". N2YO. 25 January 2015. Retrieved 25 January 2015.
- ^ "CBERS-1 (China-Brazil Earth Resources Satellite) - 1st Generation Satellite Series". Earth Observation Portal. European Space Agency. Retrieved 1 December 2013.
- ^ "CBERS-1, 2 and 2B Description". INPE. Archived from the original on 20 January 2014. Retrieved 1 December 2013.
- ^ "Display: CBERS 2B 2007-042A". NASA. 14 May 2020. Retrieved 26 July 2020.
This article incorporates text from this source, which is in the public domain.
- ^ "CBERS-1, 2 and 2B Cameras". INPE. Archived from the original on 20 January 2014. Retrieved 1 December 2013.
- ^ "UCS Satellite Database". Union of Concerned Scientists. Archived from the original on 9 September 2010. Retrieved 1 December 2013.
