Inverse SAR imaging of circularly and linearly polarized synthetic aperture radar

摘要

C-band, 4-8 GHz, inverse synthetic aperture radar (ISAR) experiments have been conducted to investigate the characteristics of a proposed synthetic aperture radar (SAR) system using circularly polarized antennas. The aluminum plate and dihedral reflectors were selected as targets to analyze the difference of scattering between odd-numbered and even-numbered bounce. SAR measurements with linearly polarized antennas were also performed for comparison. The SAR images show clear differences between co-polarization and cross-polarization setup of the antenna, and is consistent with theory.