Geoeye-1
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The GeoEye-1 satellite is equipped with the most advanced technology ever used in a commercial remote sensing system. The system provides images at nadir with 0.5-meter panchromatic (black & white) and 2-meter multispectral resolution. Just as important, 3 meters of inherent geolocation accuracy has never before been achieved in any commercial imaging system.
A polar orbiting satellite, GeoEye-1 orbits the Earth 15 times per day flying at an altitude of 681 kilometers with an orbital velocity of about 7.5 km/sec. Its sun-synchronous orbit allows it to pass over a given area at about 10:30 a.m. local time every day. Industry-leading agility, along and across track, means more imagery collected on a single pass. GeoEye-1 can revisit any point on Earth once every three days or sooner. The satellite collects up to 700,000 square kilometers of panchromatic (and up to 350,000 square kilometers of pan--sharpened multispectral) imagery per day, ideal for large-scale mapping projects. Customers can choose between Geo™, GeoProfessional™ and GeoStereo™ including Digital Elevation Models (DEM), Digital Surface Models (DSM), large-area mosaics and feature maps. |
Panchromatic Resolution
Multispectral Resolution Spectral Range Swath Width Off-Nadir Imaging Dynamic Range Expected Mission Life Revisit Time Orbital Altitude Nodal Crossing |
0.41 meters x 0.41 meters
(Imagery for commercial customers is resampled to 0.5m resolution) 1.65 meters x 1.65 meters 450–800 nm 450–510 nm (blue) 510–580 nm (green) 655–690 nm (red) 780–920 nm (near IR) 15.2 km Up to 60 degrees 11 bits per pixel > 10 years Less than 3 days 681 km 10:30 a.m. |
Tripoli, Libya. GeoEye-1 Pan-sharpened multi-spectral image. ©GeoEye Inc.
IKONOS
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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. |
Panchromatic Resolution
Multispectral Resolution Range Swath Width Off-Nadir Imaging Dynamic Range Expected Mission Life Revisit Time Orbital Altitude Nodal Crossing |
0.82 meters
3.2 meters 526–929 nm 445–516 nm (blue) 506–595 nm (green) 632–698 nm (red) 757–853 nm (near IR) 11.3 km Up to 60 degrees 11 bits per pixel > 8.3 years Approximately 3 days 681 km 10:30 a.m |
e-Geos is the exclusive distributor of Geoeye-1/IKONOS data in Europe and N.Africa, with non-exclusive rights in the rest of the world.
WordView-2
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The WorldView-2 system offers industry-leading accuracy, agility, capacity and spectral diversity.
WorldView-2, launched October 2009, is the first high-resolution 8-band multispectral commercial satellite. Operating at an altitude of 770 kilometres, WorldView-2 acquires with 46 cm* panchromatic resolution and 1.84 metre* multispectral resolution. WorldView-2 has an average revisit time of 1.1 days and is capable of collecting up to 975,000 square kilometres per day. Very high resolution
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Panchromatic Resolution
Multispectral Resolution Nominal swath width Dynamic range Products quantisation Spectral Range Pan Coastal Blue Green Yellow Red Red edge Nir 1 Nir 2 Elevation angle collection range |
46 cm at nadir*
1.84 m at nadir* 16.4 Km at nadir 11 bit 16 or 8 bit/pixel (on customer request) Nanometre 450 - 800 400 - 450 450 - 510 510 - 580 585 - 625 630 - 690 705 - 745 770 - 895 860 - 1040 >41° |
Takamatsu Harbour, Japan. WorldView-2 pan-sharpened multispectral image. ©DigitalGlobe
QuickBird
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DigitalGlobe's QuickBird satellite offers sub-meter resolution imagery, high geolocation accuracy, and large on-board data storage.
The QuickBird satellite is the first 60 cm commercial satellite. QuickBird's global collection of panchromatic and multispectral imagery is designed to support applications ranging from map publishing to land and asset management to insurance risk assessment. High resolution
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Panchromatic Resolution
Multispectral Resolution Nominal swath width Dynamic range Products quantisation Spectral Range Pan Blue Green Red Elevation angle collection range |
61 cm at nadir
2.44 m at nadir* 16.5 Km at nadir 11 bit 16 or 8 bit/pixel (on customer request) Nanometre 445 - 900 450 - 520 520 - 600 760 - 900 >41° |
WoldView-1
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WorldView-1, launched September 2007, is the first next-generation satellite—the most agile ever flown commercially. The high-capacity, panchromatic imaging system features half-meter resolution imagery. Operating at an altitude of 496 kilometres, WorldView-1 has an average revisit time of 1.7 days and is capable of collecting up to 750,000 square kilometres per day. The satellite is also equipped with state-of-the-art geolocation accuracy capabilities and exhibits outstanding agility with rapid targeting and efficient in-track stereo collection.
Very high resolution 50 cm panchromatic at nadir 59 cm GSD at 25° off-nadir Industry-leading geolocation accuracy Ultra-stable platform, high-precision attitude sensors and GPS Highest capacity over a broad range of collection types 17.6 km width imaging swath Bi-directional scanning Rapid retargeting using Control Moment Gyros 2199 gigabits on-board storage 800 Mbps X-band data downlink Frequent revisits at high resolution 1.7 days at 1 meter GSD or less 4.6 days at 25° off-nadir or less (59 cm GSD) Stereoscopic areas on a single pass, ensuring image continuity and consistency of quality |
Spatial Resolution (Pan)
Nominal swath width Dynamic range Products quantisation Spectral Bandwith (Pan) Elevation angle collection range |
50 cm at nadir
17.6 Km at nadir 11 bit 16 or 8 bit/pixel (on customer request) 400 - 900 nanometers >41° |
e-Geos is the Master Distributor in Europe and North Africa for WorldView-1&2 and QuickBird Data & Products.
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TERRA SPATIUM, Geoinformation and Space Products & Services- Private Security Services Company S.A.
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