WorldView-2

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Features	Benefits
Highest resolution available commercially 46 cm panchromatic at nadir 52 cm out to 20° off-nadir	Provides highly detailed imagery for precise map creation, change detection and in-depth image analysis (note that imagery must be re-sampled to 50-cm for non-US Government customers)
The most spectral diversity commercially available 184 cm resolution at nadir 4 standard colors: red, blue, green, near-IR 4 additional colors: red edge, coastal, yellow, near-IR2	Provides the ability to perform precise change detection and mapping at unprecedented resolutions in multispectral imagery, and opens door to creation of numerous new products
Industry-leading geolocation accuracy Ultra-stable platform, high-precision attitude sensors and GPS	Allows the creation of accurate maps in remote areas, maximizing the utility of whatever resources are available: DGeolocation Accuracy specification of 12.2m CE90, with predicted performance in the range of 4.6 to 10.7 meters (15 to 35 feet) CE90, excluding terrain and off-nadir effects With registration to GCPs in image: 2.0 meters (6.6 feet) CE90
Highest capacity over the broadest range of collection types 16.4 km width imaging swath (wider than any competitor, slightly narrower than WV-1) Bi-directional scanning Rapid retargeting using Control Moment Gyros (>2x faster than any competitor) 2199 gigabits on-board storage 800 Mbps X-band data downlink	Collects, stores and downlinks a greater supply of frequently updated global imagery products than competitive systems DigitalGlobe ImageLibrary filled with unrivaled speed Broadest range of collection sizes, without sacrificing capacity from small points to long strips and large areas Stereoscopic areas on a single pass, ensuring image continuity and consistency of quality
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
World-class telescope High contrast (MTF) and signal to noise ratio Selectable Time Delay Integration (TDI) levels, both panchromatic and mutlispectral bands 11-bit dynamic range	Extends the range of suitable imaging collection targets and enhances image interpretability, because images can be acquired at even the lowest light levels
Frequent revisits at high resolution; improved performance over WV-I enabled by higher altitude (770 vs. 450 km) 1.1 days at 1 m GSD or less 3.7 days at 20° off-nadir or less (52 cm GSD)	Frequent revisits increase image collection opportunities, enhance change detection applications and enable accurate map updates

Design and Specifications
Launch Information	Date: Mid-2009 Launch Vehicle: Delta 7920 (9 strap-ons) Launch Site: Vandenberg Air Force Base
Orbit	Altitude: 770 kilometers Type: Sun synchronous, 10:30 am descending node Period: 100 minutes
Mission Life	7.25 years, including all consumables and degradables (e.g. propellant)
Spacecraft Size, Mass & Power	4.3 meters (14 feet) tall x 2.5 meters (8 feet) across, 7.1 meters (23 feet) across the deployed solar arrays 2800 kilograms (6200 pounds) 3.2 kW solar array, 100 Ahr battery
Sensor Bands	Panchromatic + 8 Multispectral: 4 standard? colors: red, blue, green, near-IR 4 new colors: red edge, coastal, yellow, near-IR2
Sensor Resolution (GSD = Ground Sample Distance)	Panchromatic: 0.46 meters GSD at nadir 0.52 meters GSD at 20° off-nadir Multispectral: 1.8 meters GSD at nadir 2.4 meters GSD at 20° off-nadir (note that imagery must be re-sampled to 0.5 meters for non-US Government customers)
Dynamic Range	11-bits per pixel
Time Delay Integration (TDI)	Panchromatic: 6 selectable levels from 8 to 64 Multispectral: 7 selectable levels from 3 to 24
Swath Width	16.4 kilometers at nadir
Attitude Determination and Control	3-axis stabilized Actuators: Control Moment Gyros (CMGs) Sensors: Star trackers, solid state IRU, GPS
Pointing Accuracy & Knowledge	Accuracy: < 500 meters at image start and stop Knowledge: Supports geolocation accuracy below
Retargeting Agility	Acceleration: 1.5 deg/s/s Rate: 3.5 deg/s Time to slew 300 kilometers: 9 seconds
Onboard Storage	2199 gigabits solid state with EDAC
Communications	Image and Ancillary Data: 800 Mbps X-band Housekeeping: 4, 16 or 32 kbps real-time, 524 kbps stored, X-band Command: 2 or 64 kbps S-band
Max Viewing Angle / Accessible Ground Swath	Nominally +/-40° off-nadir = 1355 km wide swath Higher angles selectively available
Per Orbit Collection	524 gigabits
Max Contiguous Area Collected in a Single Pass	96 x 110 km mono 48 x 110 km stereo
Revisit Frequency	1.1 days at 1 meter GSD or less 3.7 days at 20° off-nadir or less (0.52 meter GSD)
Geolocation Accuracy (CE 90)	Specification of 12.2m CE90, with predicted performance in the range of 4.6 to 10.7 meters (15 to 35 feet) CE90, excluding terrain and off-nadir effects With registration to GCPs in image : 2.0 meters (6.6 feet)

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