ADEOS I
The launch of ADEOS I aboard an H-II rocket
|
|
| Mission type | Environmental monitoring, observation |
|---|---|
| Operator | NASDA |
| Spacecraft properties | |
| Launch mass | 3,500 kilograms (7,700 lb) |
| Start of mission | |
| Launch date | 17 August 1996, 01:53:00 UTC[1] |
| Rocket | H-II |
| Launch site | Tanegashima Yoshinobu 1 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sun-synchronous[2] |
| Inclination | 98.6 degrees |
| Period | 101 minutes |
| Instruments | |
| OCTS, AVNIR, NSCAT, TOMS, POLDER, IMG, ILAS, RIS | |
ADEOS I (Advanced Earth Observing Satellite 1) was an Earth observation satellite[3] launched by NASDA in 1996.[4][5] The mission's Japanese name, Midori, means "green".[6]
The mission ended in July 1997 after the satellite sustained structural damage to the solar panel array.[4] Its successor, ADEOS II, was launched in 2002. Like the first mission, it ended after less than a year[6] – also following solar panel malfunctions.[7]
Contents
Purpose
ADEOS was designed to observe Earth's environmental changes, focusing on global warming, depletion of the ozone layer, and deforestation.[6]
On board the satellite are eight instruments developed by NASDA, NASA, and CNES. The Ocean Color and Temperature Scanner (OCTS) is a whisk broom radiometer developed by NASDA.[3] The Advanced Visible and Near Infrared Radiometer (AVNIR), an optoelectronic scanning radiometer with CCD detectors, was also produced by NASDA.[3] The NASA Scatterometer (NSCAT), developed with the Jet Propulsion Laboratory, used fan-beam Doppler signals to measure wind speeds over bodies of water.[3] The Total Ozone Mapping Spectrometer (TOMS) was built by CNES to study changes to Earth's ozone layer.[3] The Polarization and Directionality of the Earth's Reflectance (POLDER) device was also developed by CNES, and was also launched on ADEOS II.[3] The Improved Limb Atmospheric Spectrometer (ILAS) was developed by NASDA and the Environment Agency of Japan, and used grating spectrometers to measure the properties of trace gases using solar occultation.[3] The Retroreflector in Space (RIS) and Interferometric Monitor for Greenhouse Gases (IMG) were both developed by Japan, and studied atmospheric trace gases and greenhouse gases respectively.[3]
Mission
Failure
On 28 August 1996, the satellite adjusted its attitude to control its orbit. As a result of this maneuver, the solar panel received sunlight from the rear. This caused the solar paddle mast to expand and the panel blanket to contract, placing tension on a soldered joint on the paddle, which eventually broke.[4]
The final communication from the satellite was received at 07:21 UTC on 30 June 1997,[4] 9 months after launch.[6]
Footnotes
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- ↑ Earth Observation Research and Application Center (2005)
- ↑ Earth Observation Research and Application Center (1998)
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 Earth Observation Portal (2008)
- ↑ 4.0 4.1 4.2 4.3 Satellite News Digest (2006)
- ↑ International Laser Ranging Service (2010)
- ↑ 6.0 6.1 6.2 6.3 Darling (2010)
- ↑ Satellite News Digest (2003)
