@article{article_471026, title={Analysis of The Performance of The NOSM For High Contrast Targets}, journal={Sakarya University Journal of Science}, volume={23}, pages={224–232}, year={2019}, DOI={10.16984/saufenbilder.471026}, author={Akıncı, Mehmet Nuri}, keywords={Near Field Orthogonality Sampling Method,Microwave Imaging}, abstract={<p>Electromagnetic inverse scattering from high con- <br />trast scatterers is of special importance, especially in Microwave <br />Imaging, wherein the recent technology aims to image high <br />contrast scatterer. To this purpose, this paper presents an analysis <br />of the performance of the recently proposed microwave imaging <br />technique of the Near Field Orthogonality Sampling (NOSM) <br />for the high contrast targets. For this purpose, the indicator of <br />the NOSM, which is the reduced scattered field, is derived for <br />an electrically homogeneous circular scatterer, which is centered <br />around origin. Next, the ratios of the indicator energy densities <br />inside and outside of the target is defined as a quality metric. <br />After, the quality metric and its expressions for limiting cases <br />(i.e. where the electrical parameter of the the target is too <br />large or too low) are derived in terms of the background’s <br />and target’s electrical properties. Then, the introduced metric <br />is computed and plotted for a popular application, which is <br />microwave imaging of the breast. Obtained results show that <br />the high contrasts between the target and the background does <br />not have an important affect on the quality of the reconstructions <br />of the NOSM. <br /> </p>}, number={2}, publisher={Sakarya University}