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

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(Radartools now running on both Windows and Linux)
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=== Software installation ===
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'''Windows:'''
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* 1. Download the IDL virtual machine: http://www.ittvis.com/download/download.asp?urlProductCode=10 (select Windows version, then select "I am evaluating", then "Download")
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* 2. Download the RAT [http://radartools.berlios.de/download.php binaries] and run the installer
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 +
'''Linux:'''
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* 1. Download the IDL virtual machine: http://www.ittvis.com/download/download.asp?urlProductCode=10 (select Linux version, then select "I am evaluating", then "Download")
 +
* 2. Download the RAT [http://radartools.berlios.de/download.php binaries] and unpack them
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* 3. Change into the rat_v0.21/ directory and start RAT with:
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    idl -vm=rat.sav
  
 
=== Sample data ===
 
=== Sample data ===

2010年1月28日 (木) 19:30時点における版

Introduction to Radar data processing

Sensors

SAR analysis methods

  • 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: ...

Frequency and Wavelength of the IEEE Radar Band designation

Frequency [GHz] Wavelength [mm] Band
1-2 30-15 L Band
2-4 15-75 S Band
4-8 75-375 C Band
8-12 375-250 X Band
12-18 250-167 Ku Band
18-27 167-111 K Band
27-40 111-0.75 Ka Band

Software installation

Windows:

Linux: 

    idl -vm=rat.sav

Sample data

See also

「http://wiki.osgeo.jp./index.php?title=Introduction_to_Radar_data_processing&oldid=1186」から取得