Launched on Jan 24, 2006, the Advanced Land Observation Satellite (ALOS) has been developed to contribute to the fields of mapping, precise regional land observation, disaster monitoring and resource surveying.
The Advanced Land Observing Satellite (ALOS) developed by the Japan Aerospace Exploration Agency (JAXA) was launched in 2006 and is a high resolution satellite owned and operated by RESTEC. The satellite has three sensors i.e. two optical imagers (PRISM and AVNIR-2) and an L-band synthetic aperture radar (PALSAR - see the RADAR page for more information). The Advanced Visible and Near Infrared Radiometer Type 2 (AVNIR-2) has a cross track pointing function with off-nadir pointing capability from -44 to +44 degrees. The Panchromatic Remote Sensing Instrument for Stereo Mapping (PRISM) is a black and white radiometer with a 2.5 m spatial resolution. PRISM has three independent optical systems for nadir, forward and backward looking capture allowing along track stereoscopy. Forward and backward looking telescopes are inclined from -24 to +24 degrees off nadir to produce a base to height ratio of 1.0. PRISM triplets are capable of producing DEMs with errors of about 5 m and with a 5 m grid spacing.
The ALOS satellite has now completed its mission after 5 years of service. During this time, ALOS mapped the Earth's surface, created three dimensional terrain models and acquired a vast number of images which are available to order through Geoimage.
|Resolution||PRISM (at nadir) 2.5 m
AVNIR-2 (at nadir) 10 m
|Nominal Swath Width||PRISM (at nadir) 35 km x 35 km (can be up to 70 km)
AVNIR-2 (at nadir) 70 km x 70 km
|Archive Availability||Possible from 2006 - 2011|
|Minimum area of purchase||Full scene|
|Stereo available?||YES - PRISM only|
|Largest Scale||1:7,500 - (PRISM)
1:7,500 - (PRISM pan-sharpened AVNIR-2)
1:25,000 - (AVNIR-2 )
|Dynamic Range||8 bits|
|Applications||Land use and planning
Mapping / Surveying
Utility corridor mapping
Mining and Exploration
Oil and Gas