Co-registration of Various Products from Different Satellites

let me try to summarize it:

  • if you have only two datasets and both are well geocoded, collocation is sufficient.
  • if you deal with multiple rasters and all are well geocoded, you can use create stack.
  • if you deal with data acquired from different sources or angles or you have terrain-induced distortions (often the case for radar data) you need coregistration to match the rasters precisely at the sub-pixel level. This is also required for interferometric analyses

Please, anyone feel free to comment if I missed an important point.

1 Like