Application of the Window Function in Bistatic Planar Near-Field Scattering Measurements

The cosine window function is introduced and applied in the planar near-field scattering measurements. Based on the basic principle of which, the bistatic planar near-field scattering measurement technique is computer simulated with the infinite long ideal conductor cylinder as the target under test. The calculation results show that in bistatic planar near-field scattering measurements, the finite scanning plane truncation errors of the far-field RCS of the target under test obtained by near-field to far-field transformation can be reduced greatly by the weighting process of the measured scattering near-field with the cosine window function, which proves the validity and applicability of the near-field data processing method by means of the cosine window function in the bistatic planar near-field scattering measurements.