Surveying, Mapping and GIS

Exploring all aspects of mapping and geography, from field data collection, to mapping and analysis, to integration, applications development and enterprise architecture...

  • Geospatial Technology, End to End...

    Exploring all aspects of mapping and geography, from field data collection, to mapping and analysis, to integration, applications development, enterprise architecture and policy

This article on ESA's website has an interesting application of interferometry - Synthetic Aperture Radar (SAR), called SAR Interferometry, or InSAR. Essentially, they used data from multiple SAR images over time, and through interferometry, were able to detect surface changes of just a few millimeters. This was done using phasing in the timing of the return signal, compared to other images- the comparative interferometry creates ripples, which then can be translated into distance differentials.


This has a lot of interesting potential with respect to seismic activity and subsurface stability, for mapping and tracking of mine or other subsidence, lava domes, et cetera....


Technorati tags:
, , , , , , , , , , , , , ,

Categories:

0 Response for the " Satellite-based SAR to map millimeter-level surface deformation "

Search