WorldView-1
WorldView-1, launched September of 2007, is fast, agile and accurate. The high-capacity, panchromatic imaging system features half-meter resolution imagery.
Operating at an altitude of 496 kilometers, WorldView-1 has an average revisit time of 1.7 days and is capable of collecting up to 750,000 square kilometers (290,000 square miles) per day of half-meter imagery. The satellite is also equipped with state-of-the-art geolocation accuracy capabilities and exhibits stunning agility with rapid targeting and efficient in-track stereo collection.
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Features |
Benefits |
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High resolution
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Provides highly detailed imagery for precise map creation, change detection and in-depth image analysis |
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High geolocation accuracy
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Allows the creation of accurate maps in remote areas, maximizing the utility of whatever resources are available:
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High capacity over a broad range of collection types
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Collects, stores and downlinks a greater supply of frequently updated global imagery products than competitive systems
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Direct downlink to customer sites available using same high-speed 800 Mbps X-band downlink |
Expedites image processing and delivery to customers where speed is a driving factor |
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World-class telescope
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Extends the range of suitable imaging collection targets and enhances image interpretability, because images can be acquired at even the lowest light levels |
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Frequent revisits at high resolution
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Frequent revisits increase image collection opportunities, enhance change detection applications and enable accurate map updates |
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Design and Specifications |
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Launch Information |
Date: September 18, 2007 |
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Orbit |
Altitude: 496 kilometers |
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Mission Life |
Expected end of life: 2018 |
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Spacecraft Size, Mass & Power |
3.6 meters (12 feet) tall x 2.5 meters (8 feet) across, |
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Sensor Bands |
Panchromatic |
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Sensor Resolution (GSD = Ground Sample Distance) |
0.50 meters Ground Sample Distance (GSD) at nadir |
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Dynamic Range |
11-bits per pixel |
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Time Delay Integration (TDI) |
6 selectable levels from 8 to 64 |
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Swath Width |
17.6 kilometers at nadir |
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Attitude Determination and Control |
3-axis stabilized |
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Pointing Accuracy & Knowledge |
Accuracy: < 500 meters at image start and stop |
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Retargeting Agility |
Acceleration: 2.5 deg/s/s |
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Onboard Storage |
2199 gigabits solid state with EDAC |
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Communications |
Image and Ancillary Data: 800 Mbps X-band |
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Max Viewing Angle / Accessible Ground Swath |
Nominally +/-45° off-nadir = 1,036 km wide swath |
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Per Orbit Collection |
331 gigabits |
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Max Contiguous Area |
60 x 110 km mono |
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Revisit Frequency |
1.7 days at 1 meter GSD or less |
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Geolocation Accuracy (CE 90) |
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* Distribution and use of imagery at better than .50 m GSD pan and 2.0 m GSD multispectral is subject to prior approval by the U.S. Government.
