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Posted on November 27th, 2012

DigitalGlobe Policy Change – Multi-Sensor Stereo Order Fulfillment

Effective immediately, DigitalGlobe now offers mixed sensor, stereo pair orders. This change has several important impacts on our Apollo Mapping clients.

Tasking Orders

By tasking both WorldView-1 and WorldView-2 for the same stereo order, your chances of obtaining low cloud cover imagery in a reasonable time frame are increased. While stereo orders will still be collected as in-track pairs, this change means that you could receive 50-cm data from both WorldView-1 and 2 for the same polygon. Please note that WorldView-1 is a 50-cm panchromatic satellite only so please consider this when placing a mixed sensor tasking order.

Archive Orders

Similar to tasking, you can now request mixed WorldView-1 and 2 stereo archive orders where such coverage might exist. This increases the availability of archive coverage, however keep in mind that WorldView-1 only offers 50-cm panchromatic stereo pairs.

As a reminder, here are the standard parameters for both archive and tasking stereo orders:

  • Convergence Angle: 30 – 60 degrees
  • Asymmetry Angle: 0 – 20 degrees
  • Bisector Elevation Angle: 60 – 90 degrees
  • Off-Nadir Angle: both images less than 35 degrees

At this time, we are not able to support custom parameters for stereo tasking orders but this should change in the near future. If you have any questions about this policy change, please let the Apollo Mapping sales team know at

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