An Improved 3D Metamaterial Aperture Imaging Algorithm Based on Back Projection and Nearfield Coherent Signal Subspace Method

The metamaterial aperture imaging has gained attention in recent millimeter-wave imaging research trends. However, in 3D imaging scene, metamaterial aperture imaging system suffers from high computational cost and long runtime. In this paper, an improved 3D metamaterial aperture imaging algorithm base on back projection (BP) and nearfield coherent signal subspace method (CSM) is proposed. Numerals simulation results prove that proposed algorithm could significantly reduce computing runtime and improve efficiency.