EGU2020-22057
https://doi.org/10.5194/egusphere-egu2020-22057
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Spectral Calibration of the SLSTR Focal Plane Assemblies

Tim Nightingale, Robert McPheat, Arrow Lee, Ed Polehampton, Ettore Pedretti, and Hugh Mortimer
Tim Nightingale et al.
  • Rutherford Appleton Laboratory, RAL Space, United Kingdom of Great Britain and Northern Ireland (tim.nightingale@stfc.ac.uk)

We describe a novel technique – Fourier transform spectroscopy – that we have developed to characterise the spectral and polarisation responses of the Sentinel-3 SLSTR optical channels. Our method has a number of advantages over conventional approaches employing a grating monochromator, including excellent spectral registration and resolution, intrinsic rejection of self-emission from the test setup and fast measurement times. Our measurements are traceable, through the spectral responsivity of a reference detector and the wavelength of a HeNe laser, to national standards.

We illustrate our method with sample results from the spectral calibrations of the four SLSTR focal plane assemblies tested to date. 

How to cite: Nightingale, T., McPheat, R., Lee, A., Polehampton, E., Pedretti, E., and Mortimer, H.: Spectral Calibration of the SLSTR Focal Plane Assemblies, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-22057, https://doi.org/10.5194/egusphere-egu2020-22057, 2020