The MAIN OBJECTIVE of the project is to plan and run ad hoc measurements finalized to test, validate and optimize:1) The radar signal simulator CleoSIm developed in the CLEOPATRA project;2) The radar signal processing and weather classification algorithms implemented on an EFB in the KLEAN project.3) The EFB GUI interfaces for the advanced display of weather classifications and decision-making advices (KLEAN project)To achieve this goal, the following SPECIFIC OBJECTIVES are aimed at:1) X-BAND polarimetric radar overview, selection and acquisition. The radar must be suitable to be mounted on airborne platform for gathering data in presence of weather events in compliance with the JU-SGO goals2) Planning the ad hoc measurement campaign in well-monitored selected scenarios3) Experiments conduction and data acquisition4) Validation, optimization and SW refinement of the avionic polarimetric radar signal simulator (CleoSIM)5) Validation, optimization of the EFB weather radar signal processing and trajectory optimization algorithms (KLEAN project)6) Refine the EFB GUI in accordance with the new needs resulting from the experimental data analysis7) EFB SW refinement and implementation to a level TRL5 (Technology Readiness Level 5)