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| Products
:: Ikonos |
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 GeoEye
first made history with the IKONOS satellite launch
almost ten years ago. IKONOS, derived from the Greek
word for image, is the world's first commercial satellite
able to collect black-and-white (panchromatic) images
with 1-meter 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
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IKONOS Imagery
Products:
GeoEye
categorizes IKONOS imagery products according
to positional accuracy, which is determined
by the reliability of an object in the image
to be within the specifi ed accuracy of the
actual location on the ground. Within each product,
location error is defi ned by a circular error
at 90% confi dence (CE90), which means that
locations of objects are represented on the
image within the stated accuracy 90% of the
time. The CE90 accuracy scale can be related
to Root Mean Square Error (RMSE) as well as
the U.S. National Map Accuracy Standards (NMAS).
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| Product
Applications At-a-Glance : |
Geo:
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The foundation of the GeoEye imagery
product line, the Geo, is a radiometrically
corrected map oriented image suitable for a
wide range of uses. In addition to being suitable
for visualization and monitoring applications,
the Geo is shipped with the sensor camera model
in rational polynomial coefficient (RPC) format.
This camera model maps the respective ground
coordinates to image product coordinates. Block
adjustment, ortho-rectification, and other photogrammetric
processing can be performed with the RPC camera
model. This product, coupled with a digital
elevation model (DEM), permits skilled users
to make their own orthorectified products using
standard commercial software and available data
sets. Geo imagery products are available as
panchromatic, multispectral, and pan-sharpened
color imagery.
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Geo Professional:
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GeoProfessional
products are orthorectified (terrain corrected)
by GeoEye’s staff of experienced production
personnel using proprietary processes perfected
in our production facilities and optimized to
the data collected by GeoEye satellites. The
ortho-rectification process employed by GeoEye
enables us to quickly deliver the most accurate
and precise terrain corrected multispectral
products available from a satellite platform.
Available in various levels of accuracy, GeoProfessional,
Precision and PrecisionPlus, these products
are suitable for feature extraction, change
detection, base mapping and other similar applications.
GeoProfessional imagery products are available
as panchromatic, multispectral, and pan-sharpened
color imagery.
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Geo Stereo:
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Providing a strong base for
three-dimensional feature recognition, extraction
and exploitation, the GeoStereo product provides
two images with stereo geometry to support a
wide range of stereo imagery applications such
as DEM creation, building height extraction,
spatial layers, and three-dimensional feature
extraction. Stereo products in epipolar or map
projections provide RPC camera model data. The
RPC camera model supports block adjustment,
three-dimensional stereo extraction, DEM generation,
ortho-rectification, and other photogrammetric
operations. GeoStereo imagery products are available
as panchromatic, multispectral, and pan-sharpened
color imagery
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IKONOS Characteristic: |
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Fecha de lanzamiento del satélite |
24/09/99 |
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Lugar de lanzamiento |
Vandenberg
Air Force Base, California /EE.UU. |
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Altitud |
681 km |
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Inclinación |
98.1º |
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Velocidad |
7km/s |
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Sentido de la órbita |
descendente
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Duración de la órbita |
98 minutos |
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Tipo de órbita |
sincrónica
con el sol |
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Angulo de visada |
rápida
alternancia entre diferentes ángulos |
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Tiempo de revista |
1 a 3 días
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Resolución en el terreno
de cada banda |
Pancromática:
1m (considerando posición nominal de 26º
para el nadir)
Multiespectral: 4m (considerando posición
nominal de 26º para el nadir) |
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Bandas espectrales |
Pan: 0.45 -
0.90 µm
Azul: 0.45 - 0.52 µm
Verde: 0.52 - 0.60 µm
Rojo: 0.63 - 0.69 µm
Infrarrojo próximo: 0.76 - 0.90 µm |
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Rango Dinámico |
posibilita
que la información sea almacenada en 11
bits por píxel, con lo cual redunda en
un mayor rango dinámico que facilita el
contraste y discriminación de la información.
No obstante, los productos pueden ser entregados
al usuario en 8 bits por píxel. |
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IKONOS description: |
Launched in 1999, IKONOS collects 1-meter
panchromatic and 4-meter multispectral data
at a rate of over 2,000 square kilometers
per minute.
IKONOS orbits the Earth every 98 minutes
at an altitude of approximately 680 kilometers
or 423 miles. It travels a sun-synchronous
orbit, passing the equator at the same local
time (10:30 a.m.) 14 times a day.
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Product Applications: |
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