Definition of a benchmark for the GIRO

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Presentation transcript:

Definition of a benchmark for the GIRO S. Wagner, B. Viticchie, T. Hewison – EUMETSAT T. Stone – USGS

Scope and purpose Definition of a reference synthetic dataset Assessment of the GIRO performances with respect to the current lunar calibration reference model ROLO: Verification / Validation of new developments Uncertainty assessment  Traceability Uncertainty assessment / traceability to the GIRO for local implementations Possibility to perform a similar assessment for newly developed model with respect to the GIRO

Parameters to vary Geometry: Time: possibly the complete 18-year cycle with “feasible” time step (TBD)  Libration + phase coverage Satellite position: (x=0., y=0., z=0.) or at the surface of the Earth + In orbit (propagation) at 800km  Extract the case to cover the parameter space Spectral Response Functions: Central wavelengths as for existing Ocean Color sensors + geostationary imagers + additional bands in between the ROLO bands (in particular for short wavelengths) Narrow + large SRFs Spectral resolution down to 1nm (TBC)

Parameters to vary Spectral Response Functions shapes: Gaussian, Truncated Gaussian, Square, Slope on the left side Slope on the right side Additional shape

Cases Test to cover the space of librations/longitudes/latitudes One squared SRF at 550nm with 1nm (TBC) or close to monochromatic Spectral tests: On a reduced sub-set of geometries

Next steps Set the framework for the cases: Define the SRFs Define the geometries: Large number of cases  Define a template file + code to adjust the template to the various cases + scripts to run the benchmark Preparation of the documentation Run the benchmark with the ROLO and GIRO to finalise the traceability Prepare a paper to serve a reference for the GIRO

Planning Set the framework for the cases Preparation of the documentation  Early August 2017 Finalising the traceability of the GIRO to the ROLO  Early September 2017  Would allow others groups to test their implementations against the GIRO  Discussions at the LCWS ? Prepare a paper to serve a reference for the GIRO  2018

Thank you