High Resolution (HR) Satellite imagery such as LANDSAT, IRS and ALOS have a spatial resolution of 5m or lower. These images have a much larger extent and a higher revisit rate which makes them suitable for small scale land use mapping and frequent monitoring of events.
EUROSENSE is offering following HR imagery:
SPOT 2-4
The SPOT constellation offers an unsurpassed acquisition and
revisit capacity to acquire everyday imagery from anywhere in the world. SPOT
imagery offers an optimum combination of resolution and coverage. A single SPOT
scene covers a footprint of 60 km x 60 km in a full range of resolutions
of 20 m, with a location accuracy often better than 30 m. Such precise,
synoptic coverage is ideal for applications at regional and local scales from 1:100 000 to 1:10 000.
| SPOT2 - 20m - Bay of Combermere - Myanmar |
SPOT4 - 10m - Riyadh - Saudi Arabia |
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| © Cnes 1993 - Distribution Spot Image |
© Cnes 1993 - Distribution Spot Image |
ALOS AVNIR-2
Japan's Advanced Land Observation
Satellite (ALOS), launched in 2006 by the Japan Aerospace and Exploration
Agency (JAXA), offers a new source of geospatial information for users of
satellite imagery around the world. ALOS offers the largest available
combination of spectral, spatial and radiometric characteristics. The mission
combines three independent sensing systems - PRISM, AVNIR-2 and PALSAR - able
to acquire optical and radar imagery with various resolutions and ground
footprints. AVNIR-2 (Advanced Visible and Near Infrared Radiometer) is a 4-band
multispectral sensor that can be steered 44° on either side of the ground track
and has a revisit rate of 2 days. Imagery is acquired at a resolution of 10 m.
| ALOS AVNIR-2 - 10m - Beijing |
ALOS AVNIR-2 - 10m - Ariake Sea
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© JAXA 2006
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© JAXA 2006 |
LANDSAT
The Landsat
program is the longest-running commercial earth observation satellite program.
The first Landsat satellite flew in 1972, since when a further five satellites
have been successfully launched. On Landsat 7, the latest in the series, the
Enhanced Thematic Mapper (ETM+) sensor provides 7 bands of multi-spectral
data at 30 meters resolution, plus a panchromatic band at 15 m, over
a swath 183 km wide. There is also a 60 m thermal infrared band.
| Landsat7 - 30m - Venice |
Landsat7 - 15m - Norway |
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© Eurimage 2000
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© Eurimage 1999 |
IRS-1C/1D
IRS-1C and
IRS-1D are twin satellites within the IRS (Indian Remote-Sensing Satellite)
satellite constellation of the Indian Space Research Organization. IRS-1C and
IRS-1D are respectively launched in 1995 and 1997. These satellites carry each
three sensors: a panchromatic camera (PAN), a Linear Imaging and Self
Scanning Sensor (LISS-3) and a Wide Field Sensor (WiFS). They allow
imagery up to 5,8 m resolution. The primary objective of the IRS
satellites is to provide systematic and repetitive acquisition of data of the
Earth's surface under nearly constant illumination conditions.
IRS-P6
IRS-P6, also
known as ResourceSat-1, is the continuation of the IRS-1C/1D missions with
considerably enhanced capabilities. ResourceSat-1 carries three cameras: a Linear
Imaging and Self Scanning Sensor (LISS-III), a high resolution Linear
Imaging Self Scanner (LISS-IV), which allows the acquisition of
stereoscopic imagery, and an Advanced Wide Field Sensor (AWiFS). The LISS-III
sensor is a multi-spectral camera operating in four spectral bands,
three in the visible and near infrared and one in the SWIR region, as in the
case of IRS-1C/1D. The LISS-IV camera is a high resolution multi-spectral
camera operating in three spectral bands (B2, B3, B4). LISS-IV can be
operated in two modes (multispectral or mono mode). The AWiFS camera operates
in four spectral bands identical to LISS-III, providing a spatial resolution
of 56 m and covering a swath of 740 Km. To cover this wide swath,
the AWiFS camera is split into two separate electro-optic modules.