WorldView-1
WorldView-1 Satellite Sensor (0.46m)
The WorldView-1 offers a high-capacity, panchromatic imaging system which features 0.46m resolution imagery.
Operating at an altitude of 496 kilometers, WorldView-1 satellite 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
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
|
Orbit Inclination |
sun-synchronous |
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 Km2at 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)
|
Sensor Bands |
Panchromatic
|
Metric Accuracy |
Accuracy: <500 meters at image start and stop
Knowledge: Supports geolocation accuracy below
|
Geolocation Accuracy
(CE 90%) |
Demonstrated <4.0 m CE90 without ground control
|
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
|
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