Radar Cross-Section Measurement Using the Near-Field Single-Frequency Angular-Diversity Technique

摘要

Radar cross-section(RCS)measurement with the near-field electromagnetic wave illu mination of a target has been proved to be practical.The existing methods employ the multiplefrequency angular-diversity(MFAD)technique,whereas this paper considers the single-frequency angular-diversity(SFAD)technique.The paper takes into account the scattering center modeling and the limitation of higher sidelobes in reconstructing images in the SFAD technique compared to the MFAD technique.A method of combining the SFAD technique with the RELAX approach is presented for the high-resolutionextraction of scattering centers on a target.The proposed method offers an excellent RCS recovery,which is validated by numerical results.