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IKONOS,
derived from the Greek word for image,
is the world’s first commercial
satellite able to collect black-and-white
(panchromatic) images with 82-centimeter
resolution and multispectral imagery
with 4-meter resolution. Imagery from
both sensors can be merged to create
1-meter color imagery (pan-sharpened).
The more than 300 million square kilometers
of imagery that IKONOS has collected
over every continent is being used for
national security, military mapping,
air and marine transportation, and by
regional and local governments.
Ikonos has a repetitive, circular,
sun-synchronous, near-polar orbit guaranteeing
full coverage of the earth. The sensor
can be inclined to acquire imagery
up to 700 km either side of the track
(maximum incidence angle 26º),
thus giving the satellite the capacity
to revisit, albeit with different sensor
angles and resolution, any area on
the earth on average every 1.5 days
(data resolution up to 2 metres). An
average 2.9 day revisit can be achieved
for 1 metre resolution data in an area
that covers up to 300 kms either side
of the track (angle +/- 10°).
Ikonos has an on-board recorder, and
so can acquire data over almost any area
of the Earth’s surface. This recorder
can hold 64Gbit of data (approximately
26 Full images of both Pan and MS data),
and the downlink of data is made at the
stations of Fairbanks and Tromsoe, in
optimal position thanks to their high
latitude.
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