- Date Issued
- 2004
- Keywords
- Radar - SAR
- Satellitter
- Elektromagnetiske bølger
- Polarisasjon
- Project number
- 2004/03770
- Permalink
- http://hdl.handle.net/20.500.12242/1770
- Collection
- Rapporter
-
- 04-03770.pdf
- Size: 522k
- Abstract
- A method for raw signal generation for extended SAR (Synthetic Aperture Radar) scenes with very high resolution is described. Such a simulator shall handle resolution better than 30 cm, squinted geometry, elliptical orbit motion and use a polarimetric reflectivity matrix. Classical polarimetric scattering theory is based on electromagnetic harmonic fields using Maxwell’s equations, Green’s function, Huygens’ principle and Kirchhoff’s approximation. Here, the scattering theory is modified for a chirp field. Calculated expressions for the scattered chirp field or the reflectivity matrix in the single scattering case are presented. Such a reflectivity matrix can then be input to the Inverse-EETF4 (Extended Exact Transfer Function 4th order) for raw data generation.