Calibration of the MERIC full-polarimetric radar: theory and implementation |
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Authors: | C Titin-Schnaider S Attia |
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Institution: | ONERA Palaiseau, Chemin de la Hunière, 91761, Palaiseau cedex, France |
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Abstract: | This paper describes the architecture and calibration design of the experimental ground based radar station MERIC. This full-polarimetric radar is conceived for the analysis and the recognition of non cooperative aircraft in flight.We carefully study how the full-polarimetric capability is obtained for a simultaneous transmit (simultaneous transmission of two linear FM with opposite slopes) radar system, using analogue deramping with a replica.The phase distortions of the signal propagating in the four polarimetric channels are carefully estimated. We define a phase calibrating method compatible with the outdoor measurements conditions and few constraints on reference targets.We show the phase accuracy obtained with the proposed calibration method on real measurements. |
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Keywords: | Polarimetry Radar Calibration |
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