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SAR Data Products: Low-Res Parameters

Full-Res  Low-Res  Complex

Post-Sept-96 Low-Res Product Parameters

See the product availability matrix for information regarding when these products will be distributed (e.g., uncalibrated vs. calibrated releases).


Image Size Range Direction Image Size Azimuth Direction Pixel Spacing Resolution Pixels per Line & Line Count Image Size Mbytes
RADARSAT Modes: (km) (km) (m) (m) (min/max) (min/max)
Standard Beams:
ST1 102.4 102.4 100 150 1024 1
ST2 102.4 102.4 100 150 1024 1
ST3 102.4 102.4 100 150 1024 1
ST4 102.4 102.4 100 150 1024 1
ST5 102.4 102.4 100 150 1024 1
ST6 102.4 102.4 100 150 1024 1
ST7 102.4 102.4 100 150 1024 1
Wide Beams:
WD1 153.6 153.6 200 300 768 0.5
WD2 152.7 153.6 200 300 768 0.5
WD3 120.7 153.6 200 300 768 0.5
High Incidence Beams:
EH4 51.2 51.2 100 150 512 1
ScanSAR
SWA(SW1):WD1,2,3, ST7 512 512 400 600 1280/1810 1.6/3.3
SWB(SW2):WD1,2, ST5,6 459.8 512 400 600 1280/1810 1.6/3.3
SNA(SN1):WD1,2 307.2 307.2 400 600 768/1086 0.6/1.1
SNB(SN2):WD2, ST5,6 298.3 307.2 400 600 768/1086 0.6/1.1

Notes:

  1. All modes except ScanSAR are 8 by 8 reductions of the Full Res image. The ScanSAR modes are 4 by 4 reductions (of the 100 meter data).
  2. The minimum and maximum sizes listed for the ScanSAR products correspond to the min and max possible sizes for geocoded and terrain-corrected ScanSAR products. The minimum possible size is the same as the size of a standard ScanSAR image; i.e. no rotation was needed to transform the data onto a specified map projection. A value of 2 times the standard image size was estimated as the upper limit for a geocoded image; in the worst case where the data must be rotated by 90 degrees to fit the map projection, the resulting image should be less than this estimated limit.