Spatially variant apodisation for sidelobe suppression in near range radar imagery

High sidelobes greatly reduce the quality of radar imageries. Under near range condition, sidelobe suppression becomes more intractable due to space-variant characteristic wavenumber spectrum. The Spatially variant apodisation (SVA) method is extended for in first multiplies original image by a compensation term so that spectra all targets shift same central position. Then, spatially weighting scheme with changeable adopted suppress sidelobes. Based on these two procedures, effectively overcomes effect Similar SVA method, proposed can while maintaining mainlobe width. In addition, since it implemented domain, this post-processing operation and very conducive parallel processing. Both 2-D 3-D measured data verify its effectiveness.