Barry Rice

- doing science on a terrestrial planet -

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Instrument profile: EROS--Earth Resources Observation Satellite

The privately owned company ImageSat International operates a single satellite (EROS A). ImageSat plans to launch additional satellites: EROS B in 2006, and EROS C in 2008. EROS A carries a high resolution, panchromatic detector. EROS B and C will carry multispectral devices.

Usefulness to land managers
EROS products are quite affordable, and are very high resolution, so they could be quite valuable at a single preserve scale. However, they are currently limited by the panchromatic option. Even so, the fact that EROS A images can be ordered as stereo pairs provides interesting potential application possiblities for staff working in sites with significant topographical challenges. ImageSat appears to sell many of its images to those interested in snooping around the military/defense activities of countries around the world.

Costs and Contacts
$1500 to task the satellite for the acquisition of a new scene (13.5km × 13.5 km)
$5/km2 (25 km2 minimum purchase) for archived data.
Stereo pairs are twice the cost, since they require pairs of images. International's web site. guide. FAQs.

Sample images (all 1.8m panchromatic)


Stromboli Volcano,

Acropolis, Athens

Useful Web Sites
See above.

Technical Specs

Spectral data characteristics:
  Eros A (Currently Active) Eros B (Launch date: 2006) Eros C (Launch date: 2008)
Bandwidths 0.5-0.9 micron (panchromatic) 0.5-0.9 micron (panchromatic)
0.48-0.52 (blue)
0.54-0.58 (green)
0.64-0.68 (red)
0.82-0.9 (infrared)
TBA (panchromatic)
TBA (multispectral)

Areal data characteristics:
Sampling 1.8 m (standard)
approx. 1 m ("hypersamplinga")
0.87 m (panchromatic)
3.48 m (multispectral)
0.7 m (panchromatic)
2.8 m (multispectral)
Swath/Scene size 13.5×13.5 km (standard)
9.5×9.5 km ("hypersamplinga")
13.5×13.5 km 11×11 km
a"hypersampling" presumably refers to a repeat sampling, averaging, or interpolation algorithm that attempts to extract maximum information from the replicated observations.

References 17 Sept. 2004


4 February 2009