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Summary

The Interferometric Land-Use images have been generated at ESA/ESRIN by a
prototype Interferometric Quick-Look (IQL) Processor, which handles
complete strips of SAR acquisition. These examples of interferometric
data have been processed from the "tandem mission", during which the ERS-1 and
ERS-2 satellites were flying in orbits so that the same part of
... the ground was observed with a 1-day interval.

Please note, that these ILU images are not a standard ESA product and it
is not possible to order them in the same way that it is with other
data. They are displayed here for the purpose of demonstrating the
results that can be achieved with ERS data using interferometric
techniques.

The ILU image is an RGB image where the separate channels have been
coded such that: Red = Interferometric coherence, Green = Average
intensity of the two acquisitions, Blue = Intensity change between the
two acquisitions. This image is useful to quickly assess the suitability
of the interferometric pair for discrimination between different land
use types.

In addition, this particular RGB combination has been chosen so that the
land use types are coloured in a manner which might be found in a
photographic image. In this way the ILU images can be thought of as a
form of "colour SAR image".

A simplified understanding of the relation between the ILU image colours
and the land surface type is as follows:

Green areas correspond to heavily vegetated (forests) or layover areas.
Blue areas correspond to water surfaces (sea & inland water).
Red areas correspond to bare rock and stable agricultural fields.
Yellow areas correspond to urban centres.

For any query your contact point is ESA/ESRIN at
Frascati: eohelp@esrin.esa.it.

Geographic Coverage Spatial coordinates   

N: 90.0

S: -90.0

E: 180.0

W: -180.0

Temporal Coverage

Start Date: 1995-12-30

Location Keywords

GEOGRAPHIC REGION > GLOBAL LAND

Science Keywords

LAND SURFACE > LAND USE/LAND COVER

ISO Topic Category

GEOSCIENTIFIC INFORMATION IMAGERY/BASE MAPS/EARTH COVER PLANNING CADASTRE

Platform

ERS-1 > European Remote Sensing Satellite-1 ERS-2 > European Remote Sensing Satellite-2

Instrument

SAR > Synthetic Aperture Radar

Data Set Progress

IN WORK

Originating Center

ESA

Data Center

ESRIN Earth Observation, European Space Agency Data Center URL: http://earthnet.esrin.esa.it/ Data Center Personnel Name: ESA/ESRIN HELPDESK Phone: +39 06 94180 1 Fax: +39 06 94180J 280 Email: eohelp at esrin.esa.it Contact Address: ESA/ESRIN Via Galileo Galilei, CP 64 City: Frascati Postal Code: I-00044 Country: Italy

Personnel

HENRI LAUR Role: INVESTIGATOR Phone: +39 06 94180557 Fax: +39 06 94180280 Email: hlaur at esrin.esa.it Contact Address: ESA/ESRIN Via G. Galilei City: Frascati Postal Code: 00044 Country: Italy NICHOLAS WALKER Role: TECHNICAL CONTACT Phone: +39 06 94180590 Fax: +39 06 94180280 Email: Nicholas.Walker at esrin.esa.it Contact Address: ESA/ESRIN Via G. Galilei City: FRASCATI Postal Code: 00044 Country: ITALY

Publications/References
Interferometry Documentation:
http://earth1.esrin.esa.it/esa_doc/doc_rs_.html#_RSI

Creation and Review Dates

Last DIF Revision Date: 2004-11-29

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