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WorldView-4 Satellite Imagery
WorldView-4 offers multispectral, high-resolution commercial satellite imagery from the Maxar imagery archive. WorldView-4 is retired from the Maxar constellation, but it provides archive imagery at 31 cm panchromatic resolution and 1.23 meter multispectral resolution.
Features and benefits
Very high-resolution - Panchromatic 31 cm - Visible & near-infrared 1.24 m
Industry-leading geolocation accuracy
High capacity in various collection modes
Bi-directional scanning
Rapid retargeting using Control Moment Gyros (>2x faster than any competitor)
Direct Access tasking from and image transmission to customer sites
Simultaneous, high resolution, super-spectral imagery
Large area mono and stereoscopic collection eliminates temporal variations
Precision geolocation possible without ground control points
Global capacity of 680,000 sq km per day, which doubled Maxar's 30 cm collection capability and the ability to collect for large-area mapping projects at the highest commercially available resolution
Design and specifications
Orbit
Altitude: 617 km
Type: Sun Synchronous, 10:30 am descending Node Period: 97 min.
Spacecraft size and aperture
Size: 5.3 m (17.7 ft) tall x 2.5 m (8 ft) across 7.9 m (26 ft) across deployed solar arrays Aperture: 1.1m
Sensor bands
Panchromatic: 450 - 800 nm
4 Multispectral:
Red: 655 - 690 nm Green: 510 - 580 nm Blue: 450 - 510 nm Near-IR: 780 - 920 nm
Sensor resolution
(or GSD, ground sample distance; off-nadir is geometric mean)
Panchromatic Nadir: 0.31 m 20° Off-Nadir: 0.34 m 56° Off-Nadir: 1.00 m Multispectral Nadir: 1.24 m 20° Off-Nadir: 1.38 m 56° Off-Nadir: 4.00 m
Dynamic range
11-bits per pixel
Swath width
At nadir: 13.2 km
Attitude determination and control
Type: 3-axis Stabilized
Actuators: Control Moment Gyros (CMGs) Sensors: Star trackers, precision IRU, GPS
Pointing accuracy and knowledge
Accuracy: 170 m at 40 off-nadir
Knowledge: Supports geolocation accuracy below
Retargeting agility
Time to Slew 200 km: 10.6 sec
Onboard storage
3200 Gb solid state with EDAC
Communications
mage & ancillary data: 800 Mbps X-band Housekeeping: 120 kbps real time, X-band Command: 64 kbps S-band
Max contiguous area collected in a single pass (30° off-nadir angle)
Mono: 66.5 km x 112 km (5 strips) Stereo: 26.6 km x 112 km (2 pairs)
Revisit frequency (at 40°N latitude)
1 m GSD: < 1.0 day
Total constellation >4.5 accesses/day
Geolocation accuracy (CE90)
Predicted <5 m CE90 without ground control
Capacity when collecting
680,000 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.
