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DeDop / dedop-core

DeDop is a User Configurable Tool for Processing Delay Doppler Altimeter Data.
http://dedop.org/
GNU General Public License v3.0
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Surface Locations #1

Closed mark-ep closed 8 years ago

mark-ep commented 8 years ago

Surface Locations

Summary:

Implement the Surface Locations algorithm of the SAR L1B processing chain.

The Surface Locations algorithm computes the locations and corresponding datation and orbit parameters defined by the intersection of the Doppler beams and estimated surface positions along the satellite track.

Algorithm description:

  1. Generate surface locations derived from the burst positions along the satellite's track. These positions are estimated using the window delay.
  2. initialize output variables for the first surface location, based on the variables of the burst from which it was calculated.
  3. Compute the angular azimuth beam resolution at the current satellite position, and determine where this direction intersects with the surface.
  4. Interpolate values for a new surface location at the position of this intersection.
  5. Perform an interpolation to estimate the configuration of the satellite's orbit associated with the new surface location.