This project aims at the development of the on-ground calibration targets for the MicroWave Imager instrument of the MetOp-Second Generation Program. MWI is a conically scanning microwave radiometer, providing a total number of 26 channels (including dual polarisation channels) between 18 GHz and 183 GHz. The on-ground calibration targets are microwave test targets used to verify the instrument radiometric performance. They consist in millimeter-wave loads that simulate a black body at either fixed or variable temperatures; the aim is to simulate the Cold Sky and the Earth brightness temperatures. Two kinds of reference targets are required: i) ambient targets at fixed temperature for ambient test, used to give references to characterize the radiometric gain of the Instrument: ii) thermal-vacuum targets used to simulate the Cold Sky at fixed temperature and the Earth at variable temperature, to characterize the radiometric performances of the Instrument.
Partners: OHB Italia, Politecnico di Torino, Università di Milano Bicocca, Pasquali Microwave Systems
IEIIT is responsible for the electromagnetic design of the targets.
Funding: European Space Agency (ESA) under the MetOp Second Generation Programme (ITT nr. AO510027)
Timeline: 2018 - 2021