Augmented Depolarizing Scatterer Based on Resonant Elements For Polarimetric Radar Calibration - Archive ouverte HAL
Article Dans Une Revue IEEE Transactions on Antennas and Propagation Année : 2022

Augmented Depolarizing Scatterer Based on Resonant Elements For Polarimetric Radar Calibration

Résumé

A 3-in-1 depolarizing circular scatterer for the polarimetric radar calibration is proposed in this paper. The proposed scatterer is low cost, compact, planar circuit, and well suited for the radar operating in a compact range, for example, chipless RFID technology. By the virtue of its circular shape, the rear side of the proposed scatterer acts as a metallic disk with strong co polarization backscattered signals. The front side is composed of eight resonant dipoles which make it nondepolarizing and depolarizing scatterers at the inclination of 0° and 45°, respectively. The features of proposed circular scatterer are tested as reference calibration objects for single antenna based polarimetric radar calibration techniques. Two test objects are utilized: a dihedral tilted at 45° and a depolarizing multi resonant planar structure commonly called chipless RFID tag. The performance of proposed circular scatterer is also compared with the standard reference calibration objects: a metallic disk and a dihedral tilted at 22.5°. The performance of proposed circular scatterer is comparable to the standard reference calibration objects for the calibration techniques (namely Type 1 and Type 2). The proposed scatterer is potentially tolerant of displacement up to 1 cm and misalignment equals 2°.
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Dates et versions

hal-03353064 , version 1 (23-09-2021)

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Zeshan Ali, Etienne Perret. Augmented Depolarizing Scatterer Based on Resonant Elements For Polarimetric Radar Calibration. IEEE Transactions on Antennas and Propagation, 2022, 70 (2), pp.1415-1427. ⟨10.1109/TAP.2021.3111283⟩. ⟨hal-03353064⟩

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