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WorldView-2 Satellite Imagery
WorldView-2, launched October 2009, is the first high-resolution 8-band multispectral commercial satellite. Operating at an altitude of 770 km, WorldView-2 provides 46 cm panchromatic resolution and 1.85 meter multispectral resolution. WorldView-2 has an average revisit time of 1.1 days and is capable of collecting up to 1 million sq km of 8-band imagery per day, greatly enhancing Maxar’s multispectral collection capacity for more rapid and reliable collection. WorldView-2 substantially expands imagery product offerings to all Maxar customers.
Features
Very high resolution
The most spectral diversity commercially available
- 4 standard colors: blue, green, red, near-IR1
- 4 new colors: coastal, yellow, red edge, and near-IR2Industry-leading geolocation accuracy
High capacity over a broad range of collection types
Bi-directional scanning
Rapid retargeting using Control Moment Gyros (>2x faster than any competitor)
Direct downlink to customer sites available
Frequent revisits at high resolution
Benefits
Provides highly detailed imagery for precise map creation, change detection, and in-depth image analysis
Geolocate features to less than 5 m to create maps in remote areas, maximizing the utility of available resources
Collects, stores, and downlinks a greater supply of frequently updated global imagery products than competitive systems
Stereoscopic collection on a single pass, ensures image continuity and consistency of quality
Provides the ability to perform precise change detection, mapping and analysis at unprecedented resolutions in 8-band multispectral imagery
Design and specifications
Launch Information
Date: October 8, 2009
Launch Vehicle: Delta 7920 (9 strap-ons)
Launch Site: Vandenberg Air Force Base, California
Orbit
Altitude: 770 km
Type: Sun synchronous, 10:30 am descending node
Period: 100 min.
Mission Life
10-12 years, including all consumables and degradables (e.g. propellant)
Spacecraft Size, Mass and Power
5.7 m (18.7 ft) tall x 2.5 m (8 ft) across
7.1 m (23 ft) across the deployed solar arrays
2615 kg (5765 lbs.)
3.2 kW solar array, 100 Ahr battery
Sensor Bands
Panchromatic: 450 - 800 nm
8 Multispectral
Sensor Resolution
Panchromatic: 0.46 m GSD at nadir, 0.52 m GSD at 20° off-nadir Multispectral: 1.85 m GSD at nadir, 2.07 m GSD at 20° off-nadir
Dynamic Range
11-bits per pixel
Swath Width
16.4 km at nadir
Attitude Determination and Control
3-axis stabilized
Actuators: Control Moment Gyros (CMGs) Sensors: Star trackers, solid state IRU, GPS
Pointing Accuracy and Knowledge
Accuracy: <500 m at image start and stop Knowledge: Supports geolocation accuracy below
Retargeting Agility
Time to Slew 200 km: 10 sec
Onboard Storage
2199 Gb 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 Contiguous Area Collected in a Single Pass (30° off-nadir angle)
Mono: 138 x 112 km (8 strips)
Stereo: 63 x 112 km (4 pairs)
Revisit Frequency (at 40°N Latitude)
1.1 days at 1 m GSD or less
3.7 days at 20° off-nadir or less (0.52 m GSD)
Geolocation Accuracy (CE90)
Demonstrated <3.5 m CE90 without ground control
Capacity
1 million sq km per day
For more information or to order products and/or services visit our online store . You can contact GeoWGS84 directly at (720) 702-4849 or info@geowgs84.com.
