「Introduction to Radar data processing」の版間の差分

2010年1月28日 (木) 14:53時点における版

PALSAR: Phased Array type L-band Synthetic Aperture Radar
- about system (HTML)
- ERSDAC PALSAR Pamphlet, PDF 8 pages

SAR backscatter analysis (about): enables to estimate volume of water contained in soil, volume of biomass in forests, conditions of waves in the ocean etc.
- Requirements: ...
SAR interferometry processing (about): enables to produce elevation data and to measure topographical change (two SAR images are used - called Master Image and Slave image, respectively)
- Requirements: complex SAR data - Single Look Complex as parallax is not removed
- General steps (cited from CCRS tutorial):
  - Process data to SLC images
  - Register the two images to 1/10 pixel
  - Over-sample by a factor of 2 in both dimensions
  - Filter common bands in spectrum
  - Conjugate multiply to form interferogram
  - Smooth the interferogram
  - Measure coherence
  - Unwrap phase
  - Estimate geometry parameters (especially baseline)
  - Remove flat-earth fringes
  - Convert unwrapped phase to height and/or motion
Polarimetric SAR processing (about): forest fire monitoring, classification of vegetation (height), water content in vegetation, monitoring of snow cover, condition of ice, flood monitoring and soil moisture.
- Requirements: ...

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 * '''SAR interferometry processing''' ([http://www.palsar.ersdac.or.jp/e/data/interf.html about]): enables to produce elevation data and to measure topographical change (two SAR images are used - called Master Image and Slave image, respectively)
 ** Requirements: complex SAR data - Single Look Complex as parallax is not removed
+** General steps (cited from CCRS tutorial):
+*** Process data to SLC images
+*** Register the two images to 1/10 pixel
+*** Over-sample by a factor of 2 in both dimensions
+*** Filter common bands in spectrum
+*** Conjugate multiply to form interferogram
+*** Smooth the interferogram
+*** Measure coherence
+*** Unwrap phase
+*** Estimate geometry parameters (especially baseline)
+*** Remove flat-earth fringes
+*** Convert unwrapped phase to height and/or motion
 * '''Polarimetric SAR processing''' ([http://www.palsar.ersdac.or.jp/e/data/polarimetry.html about]): forest fire monitoring, classification of vegetation (height), water content in vegetation, monitoring of snow cover, condition of ice, flood monitoring and soil moisture.
 ** Requirements: ...