WorldView-1 Satellite Imagery
WorldView-1, launched September 2007, is the first of our next-generation satellites—the most agile satellites ever flown commercially. The high-capacity, panchromatic imaging system features half-meter resolution imagery. Operating at an altitude of 496 km, WorldView-1 has an average revisit time of 1.7 days and is capable of collecting over one million sq km per day of half-meter imagery. The satellite is also equipped with state-of-the-art geolocation accuracy capabilities and exhibits stunning agility with rapid targeting and efficient in-track stereo collection. WorldView-1 resides in a descending node of 1:30pm.
Features
Very high resolution
Industry-leading geolocation accuracy - Ultra-stable platform, high-precision attitude sensors and GPS
Highest capacity over a broad range of collection types (wider than any competitor)
Bi-directional scanning
Rapid retargeting using Control Moment Gyros (>2x faster than any competitor)
Direct downlink to customer sites available
World-class telescope
- High contrast (MTF) and signal-to-noise ratio
- Selectable Time Delay Integration (TDI) levelsFrequent 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 meters 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
Extends the range of suitable imaging collection targets and enhances image interpretability
Design and specifications
Launch Information
Date: September 18, 2007
Launch Vehicle: Delta 7920 (9 strap-ons)
Launch Site: Vandenberg Air Force Base, California
Orbit
Altitude: 496 km
Type: Sun synchronous
Period: 95 min.
Mission Life
10-12 years, including all consumables and degradables (e.g. propellant)
Spacecraft Size, Mass and Power
3.6 m (12 ft) tall x 2.5 m (8 ft) across
7.1 m (23 ft) across the deployed solar arrays
2290 kg (5038 lbs.)
3.2 kW solar array, 100 Ahr battery
Sensor Bands
Panchromatic: 400-900 nm
Sensor Resolution
50 cm Ground Sample Distance (GSD) at nadir
55 cm GSD at 20° off-nadir
Dynamic Range
11-bits per pixel
Swath Width
17.7 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: 111 x 112 km (6 strips)
Stereo: 51 x 112 km (3 pairs)
Revisit Frequency (at 40°N Latitude)
1.7 days at 1 m GSD or less
5.4 days at 20° off-nadir or less (0.55 m GSD)
Geolocation Accuracy (CE90)
Demonstrated <4.0 m CE90 without ground control
Capacity
1.3 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.
