ALOS, Advanced Land Observing Satellite, is the world's top class land observing satellite launched in January 2006 by Japan Aerospace Exploration Agency (JAXA) and carries a nickname "DAICHI"
Launched by JAXA on January 2006, ALOS, also known as "DAICHI", was equipped with both optical & SAR sensors. It ended operation on May 2011 after having imaged about 6.5 million scenes of the entire world during it 5 year lifespan.
ALOS Main Specifications
|Launch date||January 24, 2006|
|Launch site||Tanegashima Space Center, Japan|
|Spacecraft mass||Approx. 4 tons|
|Generated power||Approx. 7 kW (at EOL)|
|Life||Designed life : 3 years,
Target : 5 years
|Revisit Time : 46 days|
|Sub cycle : 2 days|
|Altitude (at Equator) : 691.65 km|
|Inclination : 98.16°|
|Within 2.0 x 10 -4°
(off-line, with GCP)
|Within 1 m (off-line)|
|Data rate||240 Mbps (Via Data Relay Test Satellite)|
|120 Mbps (Direct transmission)|
|Solid-state data recorder (90 GB)|
Equipped sensor of ALOS.
ALOS has three earth-observing sensors: Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) for detecting elevations with high precision, Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2) for observing land coverage highly accurately, and Phased Array type L-band Synthetic Aperture Radar (PALSAR) for observing land areas day and night regardless of atmospheric weather conditions.
Primary Mission of ALOS
Primary mission of ALOS is to make contributions to the following fields.