WorldView-2

This is an earth observation satellite owned by DigitalGlobe. It provides panchromatic imagery of 0.46m resolution along with 8 band multispectral imagery with 1.84m resolution.

Design specifications

Launch Information	Date: October 8, 2009 Launch Vehicle: Delta 7920 (9 strap-ons) Launch Site: Vandenberg Air Force Base, California
Orbit	Altitude: 770 km Type: Sun synchronous, 10:30 am descending node Period: 100 min.
Mission Life	10-12 years, including all consumables and degradables (e.g. propellant)
Spacecraft Size, Mass and Power	5.7 m (18.7 ft) tall x 2.5 m (8 ft) across 7.1 m (23 ft) across the deployed solar arrays 2615 kg (5765 lbs) 3.2 kW solar array, 100 Ahr battery
Sensor Bands	Panchromatic: 450 – 800 nm 8 band Multispectral: Coastal: 400 – 450 nm Red: 630 -690 nm Blue: 450 – 510 nm Red Edge: 705 – 745 nm Green: 510 – 580 nm Near-IR1: 770 – 895 nm Yellow: 585 – 625 nm Near-IR2: 860 – 1040 nm
Sensor Resolution	Panchromatic: 0.46 m GSD at nadir, 0.52 m GSD at 20° off-nadir Multispectral: 1.85 m GSD at nadir, 2.07 m GSD at 20° off-nadir
Dynamic Range	11-bits per pixel
Swath Width	16.4 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: 138 x 112 km (8 strips) Stereo: 63 x 112 km (4 pairs)
Revisit Frequency (at 40°N Latitude)	1.1 days at 1 m GSD or less 3.7 days at 20° off-nadir or less (0.52 m GSD)
Geolocation Accuracy (CE90)	Demonstrated <3.5 m CE90 without ground control
Capacity	1 million km2 per day