SPOT 4

SPOT 4 data has 10 metre panchromatic and 3 band 20 metre mulitspectral imagery, with scene sizes of 60km by 60km. SPOT data has a higher bit depth than IRS data (8 bit data compared to 6-bit data of IRS), which enables SPOT data to differentiate many of the same forestry related ground features as IRS, even though SPOT has a lower resolution.