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    WorldView-4 Satellite Sensor

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    • WorldView-4 (0.31m)

    WorldView-4 Satellite Sensor (0.31m)

    On January 7, 2019 Maxar Technologies Inc. reported that its WorldView-4 satellite experienced a failure in its control moment gyros ("CMGs"), preventing the satellite from collecting imagery due to the loss of an axis of stability.

    Efforts are ongoing in conjunction with its suppliers in an attempt to restore satellite functionality, but thus far these efforts have been unsuccessful. At this time, Maxar believes that WorldView-4 will likely not be recoverable and will no longer produce usable imagery. Maxar operations has put the WorldView-4 satellite in a safe configuration and will continue to monitor the satellite's location and health. The satellite was built by Lockheed Martin and the CMGs were provided by Honeywell.

    WorldView-4 satellite was successfully launched on Friday, November 11, 2016 at 10:30 a.m. PST from Vandenberg Air Force Base, California. DigitalGlobe's WorldView-4 is capable of discerning objects on the Earth's surface as small as 31cm in the panchromatic and will collect 4-band multispectral at 1.24-meter resolution. WorldView-4 will have similar resolution as the WorldView-3 satellite sensor. This advanced resolution will offer customers unprecedented, precise views for 2D or 3D mapping, change detection and image analysis.

    WorldView-4 Satellite Sensor (0.31m)

    GeoEye-2 Satellite Sensor

    (Image Copyright © DigitalGlobe/Lockheed Martin)

    Watch WorldView-4 Launch into Space

    WorldView-4 satellite offers exceptional geolocation accuracy, which means that customers will be able to map natural and man-made features to better than <4 meter CE90 of their actual location on the Earth’s surface without ground control points.

    WorldView-4 will be flying at an altitude of 617 km (383 miles) and will be able to “revisit” any point on the globe every 4.5 days or sooner, depending upon the required look angle. The altitude could be revised before launch to utilize the recently obtained permission to acquire and deliver 0.25m resolution imagery.

    WorldView-4 customers will have a choice of ordering BASIC (satellite projection), Geo (geometrically corrected), GeoProfessional (terrain corrected or ortho-rectified), or GeoStereo (stereo pair) products, as well as imagery-derived products, including digital elevation models (DEMs),digital surface models (DSMs), large-area mosaics and feature maps.

    WorldView-4 Satellite Launch

    Credit: United Launch Alliance and Lockheed Martin

    Atmospheric Compensation - DigitalGlobe AComp Pre-Processing

    Sample Images

    WorldView-4 Satellite Image Gallery

    WorldView-4 Satellite Image Gallery

    WorldView-4 Satellite Sensor Specifications

    Orbit

    Altitude: 617 km
    Type: SunSync, 10:30 am descending Node
    Period: 97 min.

    Life

    Estimated Service Life: 10 to 12 years

    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
    (GSD, Ground Sample
    Distance, geometric mean)

    Panchromatic Nadir:0.31 m
    20° Off-Nadir:0.34 m
    56° Off-Nadir:1.00 m
    65° (earth limb):3.51 m
    Multispectral Nadir:1.24 m
    20° Off-Nadir:1.38 m
    56° Off-Nadir:4.00 m
    65° (earth limb):14.00 m

    Dynamic Range

    11-bits per pixel

    Swath Width

    At nadir: 13.1 km

    Attitude Determination
    and Control

    Type: 3-axis Stabilized
    Actuators: Control Moment Gyros (CMGs)
    Sensors: Star trackers, precision IRU, GPS

    Retargeting Agility

    Time to Slew 200 km: 10.6 sec

    Onboard Storage

    3200 Gb solid state with EDAC

    Communications

    Image & 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 <4 m CE90 without ground control

    Capacity

    680,000 km² per day

    WorldView-4 Specifications - PDF Download

    Satellites Currently Operated by DigitalGlobe

    WorldView-1 Satellite Sensor (0.46m)

    WorldView-2 Satellite Sensor (0.46m)

    WorldView-3 Satellite Sensor (0.31m)

    GeoEye-1 Satellite Sensor (0.46m)

    QuickBird Satellite Sensor (0.61m)

    IKONOS Satellite Sensor (0.82m)

    Satellite Imaging Corporation is an official Value Added Reseller (VAR) of imaging and geospatial data products for:
    A Twenty First Century Aerospace Technology Value Added Reseller
    We offer satellite imagery and data from the most technologically advanced satellite sensors. Please choose one to learn more.
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