WorldView-2 Satellite Sensor

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WorldView-2 (0.46m)

WorldView-2 Satellite Sensor (0.46m)

DigitalGlobe's WorldView-2 satellite sensor, launched October 8, 2009, provides 0.46m panchromatic (B&W) mono and stereo satellite image data. Watch video of WorldView-2 satellite launch.

WorldView-2 Satellite Sensor (0.46m)

WorldView-2 Satellite Sensor

The WorldView-2 sensor provides a high resolution panchromatic band and eight (8) multispectral bands; four (4) standard colors (red, green, blue, and near-infrared 1) and four (4) new bands (coastal, yellow, red edge, and near-infrared 2), full-color images for enhanced spectral analysis, mapping and monitoring applications, land-use planning, disaster relief, exploration, defense and intelligence, and visualization and simulation environments.

With its improved agility, WorldView-2 is able to act like a paintbrush, sweeping back and forth to collect very large areas of multispectral imagery in a single pass. WorldView-2 alone is able to collect nearly 1 million km2 every day, doubling the collection capacity of our constellation to nearly 2 million km2 per day. The combination of WorldView-2’s increased agility and high altitude enables it to typically revisit any place on earth in 1.1 days, revisit time drops below one day and never exceeds two days, providing the most same-day passes of any commercial high resolution satellite.

The WorldView-2 imaging payload is the second such system engineered and manufactured by ITT Space Systems Division for DigitalGlobe. WorldView-2 operates at an altitude of 770 kilometers, and the advanced on-board imaging system can capture pan-sharpened, multispectral images (with better than 0.46-meter resolution) from almost 500 miles above the earth. These images supply unprecedented detail and geospatial accuracy, further expanding the applications for satellite imagery in both commercial and government markets. Added spectral diversity provides the ability to perform precise change detection and mapping.

In addition to numerous other technical improvements, WorldView-2 also has the ability to accommodate direct tasking, which will allow select customers around the world to load imaging profiles directly up to the spacecraft and execute delivery of the data directly down to their own ground stations.

Sample Images

Atmospheric Compensation - DigitalGlobe AComp Pre-Processing

WorldView-2 Satellite Image Gallery

WorldView-2 Satellite Sensor Specifications

Click on image to view in full resolution

Burma, Ragoon, Myanmar

Shwedagon Pagodas

Bin Kaneh, Iran

Destroyed Missile Facility

Dubai, UAE

Palm Jumeirah Island

NDVI Ag Pivot

South Africa

Launch Date	October 8, 2009
Launch Vehicle	Delta 7920 (9 strap-ons)
Launch Site	Vandenberg Air Force Base
Orbit Altitude	770 kilometers
Orbit Type	Sun synchronous, 10:30 am (LT) descending Node
Orbit Period	100 minutes; 7.25 year mission life, 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: 1.84 meters GSD at Nadir, 2.4 meters GSD at 20° Off-Nadir
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 Position Accuracy & Knowledge	< 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	Demonstrated <3.5 m CE90 without ground control