Posted on January 9th, 2018

DigitalGlobe Basemap – A Worldwide Imagery Solution – Focus on Sub Saharan Africa

Do you have the need for regularly updated images of locations around the world?

Perhaps you need imagery to integrate with an OEM solution you are developing?

Or maybe your organization uses large amounts of high-resolution imagery each year, and you are seeking a low-cost option for this data?

If you answered yes to any or all of these questions, then the solution you are looking for is DigitalGlobe’s Global Basemap (GBM).

With Global Basemap, you have access to millions of square kilometers of imagery with low cloud-cover and off-nadir angles. This data is accessible in streaming web-mapping services as well as through an online viewer. And perhaps the most important feature of GBM is the regular updates you can receive as out-dated imagery is often of little or no use to our valued clients.

January 2018 Product Update

The available DigitalGlobe Basemap imagery over Sub-Saharan by location and with the most recent coverage date indicated with varying colors. In the vast majority of locations, there are multiple imagery dates available.

For our last edition of 2017 we found ourselves in South America with a surprising amount of coverage for a cloudy region; and for this first GBM update of 2018, we check out the coverage over Sub-Saharan Africa (SSA). As you might expect, the coverage over the interior of SSA is less than ideal given the persistent cloud cover in the Tropics and jungles here. That said, in the drier regions of Africa, the coverage is quite excellent! Here are some coverage statistics to ponder:

  • Sub-Saharan Africa GBM Coverage By Year
    • Less than 1 year (yr) old – 17,886,104 sq km, 74.2% coverage of SSA
    • 1 to 2 yr old – 19,298,987 sq km, 80.1% coverage
    • 2 to 3 yr old – 6,713,182 sq km, 27.8% coverage
    • 3 to 4 yr old – 4,097,497 sq km, 17.0% coverage
    • 4 yr old and greater – 17,816,566 sq km, 73.9% coverage
    • Total coverage – 65,812,336 sq km
    • Total (approximate) area considered – 24,110,106 sq km

Global Basemap Product Specifications

  • Geographic Regions Covered: defined area of interest, US county, country or global
  • Maximum Imagery Resolution: 50-centimeters through WMS and WCS; 30-cm for other delivery mechanisms
  • Data Sources: primary = WorldView-2 and GeoEye-1; secondary = QuickBird, IKONOS, WorldView-1 and aerial
  • Database Update Frequency: annual, semi-annual, quarterly or daily; updates are to limited portions of the database, not the entire database
  • Data Accuracy: 8.5-meter CE90%
  • Database Access: OGC streaming services (i.e. WMS, WMST, WCS and WFS), Google Earth streaming services (i.e. EarthService), ArcGIS plugin (i.e. ImageConnect), offline database and online portal
  • Pricing Model: transactional and unlimited tiered subscriptions based on geography and number of users (with uplifts for more frequent updates and imagery downloads)
  • Subscription Term: annual

For more information on the pricing and coverage available in DigitalGlobe’s Global Basemap, you can reach our sales team anytime at or during typical business hours at (303) 993-3863.

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