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.

WorldView-2 Satellite Imagery

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-IR2

  • Industry-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.

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