TanSat
| TanSat | |
|---|---|
| Type: | Earth observation satellite |
| Country: |
 People's Republic of China
|
| COSPAR-ID : | 2016-081A |
| Mission dates | |
| Dimensions: | 620 kg |
| Size: | 1.5 × 1.8 × 2.0 meters |
| Begin: | December 21, 2016 at 3:22 PM UTC |
| Starting place: | Jiuquan Cosmodrome , LC 43/603 |
| Launcher: | Long March 2 D |
| Orbit data | |
| Rotation time : | 98.9 min |
| Orbit inclination : | 98.2 ° |
| Apogee height : | 726 km |
| Perigee height : | 697 km |
TanSat is a Chinese earth observation satellite that is supposed to determine the carbon dioxide content of the earth's atmosphere . "Tan" is the Chinese word for "carbon".
It was launched into sun-synchronous orbit on December 21, 2016 at 15:22 UTC by a Langer March 2D launcher from the Jiuquan Cosmodrome rocket launch site . Together with Tansat, three earth observation microsatellites (one with a high-resolution camera and Spark01 and Spark02 with a multispectral camera ) were brought into orbit, which are to be used for agricultural and forestry purposes and for environmental monitoring.
TanSat will be able to determine the mole content of carbon dioxide in dry air on a global scale with an accuracy of about one percent. The scientific goal of the project is to understand the global distribution of carbon dioxide and its effects on climate change and to measure the seasonal fluctuations in carbon dioxide concentrations. The two main instruments on board the satellite are CarbonSpec (CDS - "Carbon Dioxide Spectrometer") and CAPI ("Cloud and Aerosol Polarimetry Imager"). CarbonSpec is a carbon dioxide spectrometer with which the two absorption lines (at 1.61 µm and at 2.06 µm) of carbon dioxide and oxygen (at 0.76 µm) can be measured in the near infrared range. It achieves a spatial resolution of one to two kilometers per pixel with a swath width of 20 km. CAPI is a multi-spectral camera and is used to verify and supplement the data from CarbonSpec with high-resolution images in five spectral ranges from the ultraviolet to the near infrared range (365–408 nm, 660–685 nm, 862–877 nm, 1360–1390 nm and 1628– 1654 nm). It contains six cameras with nine channels (the 0.67 and 1.64 nm channels each scan three independent polarization angles) and achieves a resolution of around 0.5 kilometers per pixel and a swath width of 400 km, whereby the linear sensors of the UV and optical tapes have 1600 pixels and those of the three infrared sensors have 800 pixels. The energy is supplied by solar cells boom with a span of 7,4 m and a surface area of 10 m up to the end of its life deliver a power of 1790 watts for operating at 28 volts satellite bus and lithium-ion batteries with a capacity of 80 Ah . Four reaction wheels , four torque rods, four hydrazine- operated engines (10 kg fuel), three sun sensors , two three-axis magnetometers , two star sensors , two gyroscopes and a GPS receiver are responsible for position and path control . The roughly cube-shaped satellite with an edge length of 1.5 × 1.8 × 2.0 meters and a launch mass of around 620 kilograms was developed by the Shanghai Institute for Microsystems and Information Technology (SIMIT). It is operated by the National Center for Satellite Meteorology. Its construction was initiated and financed in January 2011 by the Chinese Ministry of Science and Technology (MOST) and the Chinese Academy of Sciences . TanSat has a planned service life of three years.
Web links
Individual evidence
- ↑ a b spaceflight101.com: TanSat - Spacecraft & Satellites , accessed December 26, 2016
- ↑ n2yo.com: TANSAT Satellite details 2016-081A NORAD 41898 , accessed December 26, 2016
- ↑ a b der-orion.com: TanSat researches carbon dioxide content in the atmosphere , accessed on December 26, 2016
- ↑ eoportal.org: TanSat - eoPortal Directory - Satellite Missions , accessed on December 26, 2016