Abstract
Although typically the far-field radar cross section (RCS) of targets is of interest, researchers often find it convenient to perform RCS measurements in near-field. To obtain far-field RCS using near-field measurements, traditional methods are developed based on the near-field far-field transformation (NFFFT). These methods are sensitive to various imperfections of the real-world measurement environment and lead to significant loss in angle resolution. In this paper, a method based on extrapolation is proposed for accurate RCS measurement. The RCS of metal sphere and metal cylinder are measured. The measured values are further compared with theoretical values. Experimental results illustrate that the measured and extrapolated values are close to theoretical values.
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