Posted on June 2nd, 2020

30-cm Color WorldView-3/4 Image of the Month – Fort Bourtange, Netherlands

Every time we look at WorldView-3 and WorldView-4 (WV3/4) imagery, we are blown away. And we hope you are equally impressed with the data! Last month we were in suburban China with a look at some colorful agricultural fields, and for the June 30-cm Color WorldView-3/4 Image of the Month we head to Europe to check out a geometric star fort in the Low Countries.

PLEASE NOTE: Effective May 2016, WorldView-3/4 prices dropped again! Are you interested in finding out more about these price drops? If so, send us an email at [email protected].

WorldView-3 launched in late 2014 and WorldView-4 launched in late 2016; taken together they are the most advanced satellite constellation the commercial marketplace has ever had access to. Here are a few of the features that really set these satellites apart from the competition:

Star forts came into popularity during the mid-15th Century, apparently for their strategic advantages against cannonballs with lower, thicker walls and then with wide moats to protect against ground assaults. Fort Bourtange in the Netherlands is located between the German border and Groningen. Built in 1593, the fort withstood at least two sieges until it was converted into a village in 1851. Fort Bourtange was restored in 1960 to its mid-18th Century appearance when it was designated a museum. This 30-cm WorldView-3 image was collected on June 28, 2017 and has been enhanced by Apollo Mapping for improved colors and clarity. (Images Courtesy: Maxar)
  • Improved Resolution
    • Higher resolution means you can see more detail in WV3/4 imagery.
    • Data collected at nadir will have 31-centimeter (cm) panchromatic, 1.24-meter (m) visible and near infrared, 3.7-m SWIR (WV3 only) and 30-m CAVIS (WV3 only) bands.
    • At 20 degrees off-nadir, the resolution is 34-cm panchromatic, 1.38-m visible and near infrared and 4.1-m shortwave infrared.
  • Additional Spectral Bands
    • If spectral analysis is part of your project, then no other satellite can match WV3 with its: 8 bands of visible and near-infrared data; and 8 shortwave infrared bands which are crucial for geological studies.
  • Better Positional Accuracy
    • With accuracies of 3.5-m CE90% or better (without ground control even!), WV3/4 has no rivals for its enhanced positional accuracy.
  • Daily Revisits
    • At 40 degrees latitude, WV3 is able to image every location daily with 1-meter or better resolution and then every 4.5 days at 34-cm resolution or better.
    • WV4 is no longer collecting new imagery.
  • Increased Collection Capacity
    • WV3/4 feature 13.1-km swath widths (at nadir) with the ability to collect up to 680,000 square kilometer (sq km) of high-resolution data per day per satellite (though WV4 is dead now).
    • Improved control movement gyros translate into larger maximum contiguous collection areas per pass, with up to ~7,500 sq km of mono imagery and ~3,000 sq km of stereo possible.

If you are interested in WorldView-3 and/or WorldView-4 imagery for your next project, please let us know by phone, 303-993-3863, or by email, [email protected].

You can also find more WV3 samples and technical information on our website here and then WV4 samples and information can be found here.

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