Spot 10 Metre Imagery Options
Spot 4 - 10 Metre Colour Products
10 metre colour products are obtained by overlaying two separate images acquired simultaneously by the HRVIR instrument, one in panchromatic mode at 10 metre resolution and the other in multispectral mode at 20 metre resolution. because the camera is designed so that the two images register directly, generating a 10 metre colour image is relatively easy. The single image thus obtained is like a four band, 10 metre colour product.
Spot 5 - 10 Metre Colour Products
10 metre colour products are derived from multispectral images acquired simultaneously in the same four spectral bands as SPOT 4. Bands B1, B2 and B3 yield images at a resolution of 10 metres; SWIR band yields 20 metre images, which are then resampled to obtain a 10 metre image. Only one image therefore needs to be acquired.
The four spectral bands on SPOT 4 and SPOT 5 are:
B1 (green: 0.50 - 0.59 µm),
B2 (red: 0.61 - 0.68 µm),
B3 (near infrared: 0.78 - 0.89 µm),
B4 SWIR (short wave infrared: 1.58 - 1.75 µm).
10 Metre Black & White Products Spot 1, 2, 3 & 4
These images are acquired in a single panchromatic band in the visible spectrum. In this mode, the ground pixel size is 10 metres. The panchromatic band on SPOT 1, SPOT 2, and SPOT 3 covers wavelengths between 0.50 and 0.73 µm.
On SPOT 4, the black and white band in fact corresponds to the B2 multispectral band which covers wavelengths between 0.61 and 0.68 µm. However, for convenience and to maintain consistency with SPOT 1, SPOT 2 and SPOT 3, this band is also termed "panchromatic".