Alos

Advanced Land Observing Satellite, also called Daichi

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General

Designation	28931 / 06002A
Launch date	24 Jan 2006
Country of origin	Japan
Operator	NASDA
Mission	Remote sensing
Perigee/Apogee	691 km, sunsynchronous
Inclination	98.2°
Period
Cycle	46 days
Launch vehicle	H2A #15

High resolution JERS Will be able to relay through DRTS W.

Experienced some computer glitches right after launch. Experienced data download problems because loss of sync.
In Jan 2008, it is revealed the data provided by the satellite is in fact useless because of inaccurate attitude control and picture compression-caused artefacts.

Conducted experiments to download in real time via TDRS 10.

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End of life

Out of service	21 Apr 2011
Cause	experienced an abrupt power loss
Decay

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External resources

sat-index articles

http://www.jaxa.jp/projects/sat/alos/index_e.html

http://www.eorc.nasda.go.jp/ALOS/

Technical data

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Specifications

Prime contractor
Platform
Mass at launch	3900 kg
Mass in orbit
Dimension	22 m long
Solar array
Stabilization
DC power	7000 W
Design lifetime

Onboard storage: MDR, 706 Gb

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Panchromatic Remote sensing Instrument for Stereo Mapping (PRISM)

Wavebands	0.52-0.77 nm
Swath width	70 km (35 km for the inclined cameras)
Resolution	2.5 m

Three identical cameras, one directly towards nadir, one at 24 degrees forward-inclined and another at 24 degrees backward-inclined. Image progression is entailed by the satellite motion, not by scanning.

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Advanced Visible and Near Infrared Radiometer (AVNIR-2)

Wavebands	0.42-0.50 µm 0.52-0.60 µm 0.61-0.69 µm 0.76-0.89 µm
Swath width	70 km
Resolution	10 m

Orientable. Visible and near IR

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Phased Array L-band Synthetic Aperture Radar (PALSAR)

Swath width	40 to 350 km
Resolution	100 to 7 m

Orientable, 1270 MHz

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