Spectral response function

A spectral response function data set provide the spectral response of a given instrument on a specific platform and in a specific spectral band.

Data access

All spectral response function data sets required by Eradiate are managed the data store (see Data guide introduction for details).

Identifier format

Identifiers for spectral response function are built according to the format {platform}-{instrument}-{band}.nc where:

• platform identifies the platform (e.g. satellite’s name),

• instrument identifies the instrument onboard the platform,

• band specifies the spectral band of the instrument that is being characterised.

For example, the spectral response function data set of the SLSTR instrument onboard Sentinel-3B and in the spectral band number 5 has the identifier sentinel_3b-slstr-5.

Structure

Spectral response function data sets include two data variables:

• the instrument’s spectral response function (srf),

• the uncertainties on the srf data (srf_u),

and one dimension coordinate:

• the wavelength (w).

Both data variables (srf and srf_u) are tabulated against the wavelength.

The following additional data set attributes are provided:

• platform: platform identifier (e.g. sentinel_3b),

• instrument: instrument identifier (e.g. slstr),

• band: spectral band number (e.g. 5).