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Remote Sensing Resources
WorldView-1 Satellite Sensor
WorldView-1, DigitalGlobe's earth imaging satellite, completed a successful launch from Vandenberg Air Force Base, California, U.S.A., at 11:35 Hrs Pacific Daylight Time (PDT) on September 18th, 2007. The Delta II rocket lifted off in good weather and the WorldView-1 satellite is "currently undergoing a calibration and check-out period," according to DigitalGlobe. The first panchromatic image data should become available before October 18th, 2007.
To view a video of the WorldView-1 satellite launch, click here.
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 geo-location capabilities and exhibits stunning agility with rapid targeting and efficient in-track stereo collection.
WorldView-1 Satellite Sensor Characteristics
|Scheduled Launch Date||September 18, 2007|
|Launch Vehicle||Boeing Delta 7920 (9-strap-ons)|
|Launch Location||Vandenberg Air Force Base, California, USA|
|Orbit Altitude||496 Km|
|Spacecraft Size, Mass & Power||3.6 meters (12 feet) tall x 2.5 meters (8 feet) across,
7.1 meters (23 feet) across the deployed solar arrays
2500 kilograms (5500 pounds)
3.2 kW solar array, 100 Ahr battery
|Equator Crossing Time||10:30 AM (descending node)|
|Revisit Time||1.7 days at 1 meter GSD or less
5.9 days at 20° off-nadir or less (0.51 meter GSD)
|Swath Width||17.6 Km at nadir|
|Full Scene||17.6 Km x 14 Km or 246.4 Km 2 at nadir|
|Orbit Time||94.6 minutes|
|Dynamic Range||11 bits per pixel|
|Resolution||0.50 meters GSD at nadir
0.55 meters GSD at 20° off-nadir
(note that imagery must be re-sampled to 0.5 meters for non-US Government customers)
|Metric Accuracy||Accuracy: <500 meters at image start and stop
Knowledge: Supports geolocation accuracy below
|Specification of 12.2 m CE90, with predicted performance in the range of 3.0 to 7.6 meters (10 to 25 feet) CE90, excluding terrain and off-nadir effects
With registration to GCPs in image: 2.0 meters (6.6 feet)
|Retargeting Ability||Acceleration: 2.5 deg/s/s
Rate: 4.5 deg/s
Time to slew 300 kilometers: 9 seconds
|Attitude Determination and Control||3-axis stabilized
Actuators: Control Moment Gyros (CMGs)
Sensors: Star trackers, solid state IRU, GPS
|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
|60 x 110 km mono
30 x 110 km stereo
For more information, please contact us.
WorldView-1 Satellite Imagery Gallery
For WorldView-1 sample images, please visit the WorldView-1 Gallery.