The spy in the sky that sees backwards in time

Use of wide-area motion imagery is spreading


  • by
  • 05 7, 2022
  • in Science and technology

THE WARWAMIWAMIWAMI in Ukraine has brought the topic of eyes in the sky to general attention, as the Ukrainian army in particular has put to good effect in identifying and destroying targets in the here and now. But aerial surveillance can also reach backwards in time, by the expedient of indiscriminately recording everything that is going on in a particular neighbourhood, and then looking for useful patterns in the resulting footage. This technique, called wide-area motion imagery (), has been around since 2006. But improvements in both the recording equipment used and the means by which the images are analysed are making it more and more valuable. was first employed by American forces in Iraq to track down those placing roadside bombs. When such a bomb went off, it was possible to run the relevant footage in reverse and trace the events that led up to the explosion. That often allowed the bombers to be identified and dealt with. Clearly, though, the omniscience provided by can be employed for many other intelligence-related tasks, and the number of jobs the technology is being used for has thus multiplied.

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