Minimize Level-1 Stripmap SLC Products

Stripmap SLCs contain one image per polarisation band from one of six overlapping beams. Each beam covers 80.1 km, covering a combined range of 375 km. Pixel spacing is determined, in azimuth by the pulse repetition frequency (PRF), and in range by the radar range sampling frequency, providing natural pixel spacing.

The following properties are particular to each stripmap mode beam.

Beam S1 S2 S3 S4 S5 S6
Spatial Resolution rg x az m 1.7 x 4.9    2.0x4.9 2.5x4.9    3.3x4.9 3.3x3.9 3.6x4.9
Pixel spacing rg x az m 1.5x3.6 1.8x4.2    2.2x3.5 2.6x4.1    2.9x3.6    3.1x4.1
Incidence angle ° 22.3 25.6 31.2 36.4 41.0 43.8
Range look bandwidth MHz 87.6 74.2 59.4 50.6 44.9 42.2
Azimuth look bandwidth Hz 1586 1405 1904 1429 1886 1398
Range Hamming weighting coefficient 0.75 0.75 0.75 0.75 0.75 0.75
Azimuth Hamming weighting coefficient 0.75 0.75 0.75 0.75 0.65 0.75

The following properties are common to all stripmap mode beams.

Product ID SM_SLC
Pixel value Complex
Coordinate System Slant Range
Bits per pixel 16 I and 16 Q
Polarisation options Single (HH or VV) or Dual (HH+HV or VV+VH)
Ground range coverage km 80.1
Equivalent Number of Looks (ENL) 1
Radiometric resolution 3
Absolute location accuracy m (NRT) 2.5
Number of looks (range x azimuth) 1 x 1

SM mode products are only used for small islands and on request for extraordinary events such as emergency management.