Senin, Maret 01, 2010

ALOS Satellite Sensor

 

NASDA's ALOS (Advanced Land Observation Satellite) was successfully launched on January 24, 2006 from the Tanegashima Space Center. The ALOS (renamed "Daichi") has three remote-sensing instruments: the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) for digital elevation mapping (DEMs), the Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2) for precise land coverage observation, and the Phased Array type L-band Synthetic Aperture Radar (PALSAR) for day-and-night and all-weather land observation and enables precise land coverage observation and can collect enough data by itself for mapping on a scale of 25,000:1, without relying on points of reference on the ground. Some of its objectives are cartography, disaster monitoring, natural resource surveys and technology development.

alos-satellite-sensor

ALOS is one of the world's largest earth observation satellites whose function is to collect global and high resolution land observation data. ALOS data will be made available at conditions similar to those of ERS and Envisat missions, namely for scientific 'Category-1' use as well as commercial applications.

 

 

 

 

ALOS Satellite Sensor Characteristics

Resolution 2.5m panchromatic
10m multispectral
 
Launch Vehicle H-IIA Rocket  
Launch Site Tanegashima Space Center  
Satellite Weight Approximately 4,000kg (at Lift-off)  
Power Approximately 7,000W (End of Life)  
Designed Life 3 to 5 years  
Orbit
Sun Synchronous Sub-Recurrent Orbit
Recurrent Period: 46 days
Sub cycle: 2 days
Altitude: Approximately 692km (above the equator)
Inclination: Approximately 98.2 degrees
 
     
     
AVNIR-2    
Band Wavelength Region (µm)

Resolution (m)

1 0.42-0.50 (blue) 10
2 0.52-0.60 (green) 10
3 0.61-0.69 (red) 10
4 0.76-0.89 (near-IR) 10
     
PALSAR    
Band Frequency (GHz) Resolution (m)
SAR-L 1.3 10 and 100
     
PRISM    
Band Wavelength Region (µm) Resolution (m)
PAN
0.52-0.77

2.5

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