Geo Warping

This article explains a technology called Geo warping in the context of real-time visualization of geo-referenced radar video data. Geo warping allows displaying radar video consistently with any geographical projection and thus avoids any restrictions when displaying it together with video from multiple radar sources or together with any other geographical data like scanned maps or satellite images which are provided in a particular projection. There are many areas where geo warping has unique benefits:

• One radar video signal displayed together with maps of different geographical projections. E.g.
  • Mercator
  • UTM
  • stereographic
• Multiple radar video signals displayed simultaneously:
  • Having the computing power to do so on one computer.
  • Adapting the projection of all radar signals allowing the geographically correct display and accurate superimposition of those videos.
• Slant range correction: a modern 3D radar system can measure the height of a target and hence it is possible to correct the radar video by the real corrected range of the target. Slant Range Correction also allows to compensate the radar tower height e.g. for maritime surveillance radars.