De‐noising algorithm for enhancing microwave imaging

An algorithm for the de‐noising of S ‐parameter data used in microwave imaging is proposed. The complex S ‐parameter frequency‐sweep data are collected through scans over an acquisition surface and the algorithm separates efficiently the resulting two‐dimensional responses (one frequency at a time) into a signal and a noise component. The separation is performed with an iterative procedure similar to the empirical mode decomposition. The signal …