Satellite Overview

 

ALOS was launched by JAXA (Japan Aerospace Exploration Agency) in January 2006. It is one of the largest Earth observation satellite ever developed.

The objectives of ALOS include cartography, disaster monitoring, digital elevation model generation and resource surveying.

 

The satellite has 3 high performence remote-sensing instruments:

 

 

PRISM: 2.5m resolution panchromatic sensor for high quality stereoscopic image production

AVNIR-2: 10m resolution multispectral radiometer for land mapping

PALSAR: 10m-100m resolution L-Band Synthetic Aperture Radar sensor for forest monitoring

 

 

Apogee is using ALOS PRISM Tripet data to extract Digital Elevation Model for the mining industry

 

Example of a 2.5m high accuracy DEM over Ceduna, South Australia.

 

AVNIR-PRISM fused data produces a high quality high-resolution color imagery at 2.5m resolution.

example of an AVNIR-PRISM fused imagery used for a documentary about Arkaroola, South Australia.

 

 

Contact us now for more information

Tel:+61 8 8389 5499

E-mail nextimage(at)apogee.com.au

  

 

PRISM

 

PRISM has three independent optical systems for viewing nadir, forward and backward producing a stereoscopic image along the satellite’s track.

 

ALOS PRISM key characteristics are:

Number of Bands: 1 (panchromatic)
Wavelength : 0.52 to 0.77 micrometers
Spatial Resolution: 2.5m
Swath Width

70km (Nadir only)

35km (Triplet mode)

 

 

AVNIR-2

 

AVNIR-2 is a successor to AVNIR that was on board the Advanced Earth Observing Satellite (ADEOS), a visible and near infrared radiometer for observing land and coastal zones.

 

ALOS AVNIR-2 key characteristics are:

Number of Bands: 4
Wavelength : Band 1 : 0.42 to 0.50 micrometers
Band 2 : 0.52 to 0.60 micrometers
Band 3 : 0.61 to 0.69 micrometers
Band 4 : 0.76 to 0.89 micrometers
Spatial Resolution: 10m at nadir
Swath Width

70km at Nadir
Pointing Angle - 44 to + 44 degree (Cross-track direction)

 

 

PALSAR

 

ALOS PALSAR is a L-Band Synthetic Aperture Radar intended for all-weather earth observation. It can acquire data with a 350km swath width at 100m resolution with HH or VV polarisation and up to 10m resolution for a 40km swath.

ALOS PALSAR key characteristics are:

MODE ScanSAR Fine
Range Resolution: 100m (multilook)

7 to 44m*

14 to 88m**
Observation Swath: 250 to 350km 40 to 70km
Polarization:

HH or VV

HH or VV*

HH+HV or VV+VH**

Incident angle : 18 to 43 deg. 8 to 60 deg.

* 28MHz chirp Bandwidth

**14MHz chirp Bandwidth

 

 

 

 

 

 

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