WorldView-1

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

Costa Concordia Disaster  Giglio, Tuscany

Azadi Tower  Tehran, Iran

Houston, Texas  Downtown


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