Pattern Reconstruction from Near-Field Data Affected by 3D Probe Positioning Errors Collected via Planar-Wide Mesh Scanning

An effective procedure to correct known 3D probe positioning errors affecting the near-field–far-field transformation (NF–FF) with non-conventional plane rectangular scanning, named planar wide-mesh scanning (PWMS), is developed in this paper. It relies on non-redundant sampling representations of electromagnetic fields and related optimal interpolation (OSI) expansions has been devised when a quasi-planar antenna under test considered as suitably modelled by either double bowl or an oblate spheroid. Such algorithm first makes use so-called k-correction compensate for occurring actual points deviate from acquisition then adopts iterative restore NF samples at specified used representation those obtained previous step affected 2D errors. Finally, once regularly arranged PWMS have calculated, data required compute classic plane-rectangular NF–FF are accurately evaluated using OSI algorithm. Several numerical results presented order assess effectiveness approach.